[BioC] QuasR: problem accessing BSgenome.Rnorvegicus.UCSC.rn5
Hervé Pagès
hpages at fhcrc.org
Wed Mar 12 19:02:35 CET 2014
Hi Guido, Hans-Rudolf,
FWIW the "random" sequences are actually part of the BSgenome package
for rn5, but they are in the "multiple sequence" section:
> library(BSgenome.Rnorvegicus.UCSC.rn5)
> BSgenome.Rnorvegicus.UCSC.rn5
Rat genome
|
| organism: Rattus norvegicus (Rat)
| provider: UCSC
| provider version: rn5
| release date: Mar. 2012
| release name: RGSC 5.0
|
| single sequences (see '?seqnames'):
| chr1 chr2 chr3 chr4 chr5 chr6 chr7 chr8 chr9
chr10 chr11
| chr12 chr13 chr14 chr15 chr16 chr17 chr18 chr19 chr20
chrX chrM
|
| multiple sequences (see '?mseqnames'):
| random chrUn upstream1000 upstream2000 upstream5000
|
| (use the '$' or '[[' operator to access a given sequence)
> mseqnames(BSgenome.Rnorvegicus.UCSC.rn5)
[1] "random" "chrUn" "upstream1000" "upstream2000"
"upstream5000"
> BSgenome.Rnorvegicus.UCSC.rn5$random
A DNAStringSet instance of length 1278
width seq names
[1] 1013 AGTCTTGAACTCTTCTTCGTT...GGAATGCTACAACCTAGAAAT
chr10_AABR0611010...
[2] 1765 CAGGAGTAAAGTCTTCTGAAC...ACTAAATCCCCAACCCCGGTG
chr10_JH620367_ra...
[3] 780 AGCACACAATCTGGGAGAATA...GTTCAGAAGACTTTACCCCGG
chr10_AABR0611010...
[4] 4563 AAGACTGGAGAGATGGCTCAG...TGCTCGCCAGCTCGAGCTGGA
chr10_AABR0611010...
[5] 2250 TTGTTAGAGGTGGAGTTATGT...ATCAAAAGTTTAAGATTACCA
chr10_AABR0611010...
... ... ...
[1274] 15658 GGATAGTAAGTATAGAAGAGA...TAGGAACACAACTTTGAAGAA
chrX_JH620457_random
[1275] 548 ATCAGATAGGTTTAATGCAGA...GAAATCAGGGACTAGACAAGG
chrX_AABR06110855...
[1276] 1012 AAAGATATTCTGTAATTTGGT...AGCCATCAGGTTGTCTCTGGA
chrX_AABR06110856...
[1277] 2100 TTCTCATGACAAATTTGCTTT...AGAAGGACAGGCAACCCTTTC
chrX_JH620458_random
[1278] 5429 TTCTCTTGGGAAATTTTAGCT...TAGAGTGTTATTCCCTTCCCG
chrX_JH620459_random
> table(substr(names(BSgenome.Rnorvegicus.UCSC.rn5$random), 1, 5))
chr1_ chr10 chr11 chr12 chr13 chr14 chr15 chr16 chr17 chr18 chr19
chr2_ chr20
81 47 54 35 50 41 82 43 45 34 22
123 34
chr3_ chr4_ chr5_ chr6_ chr7_ chr8_ chr9_ chrX_
65 78 78 40 99 50 36 141
With most other BSgenome packages, the random sequences are in
the "single sequence" section because there are generally very few
of them (< 10 or 15). For rn5 I put them in the "multiple sequence"
section to avoid cluttering the "single sequence" section.
The "multiple sequence" section was originally introduced to the
BSgenome packages for hosting the upstream sequences. Then I started
to use it to store other groups of sequences that are not the main
top-level sequences of the assembly. However this division between
"single sequence" and "multiple sequence" sections is kind of arbitrary
and can be confusing. Also now that the upstream sequences are
deprecated, there is no strong use case anymore for the
"multiple sequence" section. So my plan is to get rid of it during
the next devel cycle (in BioC 2.15).
Cheers,
H.
On 03/12/2014 05:39 AM, Hans-Rudolf Hotz wrote:
> Hi Guido
>
> Michael is on holiday this week. In the meantime, I will try to reply to
> my best knowledge - I am sure, Michael will reply with a better answer,
> once he is back.
>
> We hardly work with rat, so I just downloaded the corresponding BSgenome
> and TxD packages (from devel). And indeed there is a mismatch wrt the
> seqlevels of the BSgenome and TxDb files:
>
> > seqlevels(Rnorvegicus)
> [1] "chr1" "chr2" "chr3" "chr4" "chr5" "chr6" "chr7" "chr8" "chr9"
> [10] "chr10" "chr11" "chr12" "chr13" "chr14" "chr15" "chr16" "chr17"
> "chr18"
> [19] "chr19" "chr20" "chrX" "chrM"
> > seqlevels(TxDb.Rnorvegicus.UCSC.rn5.refGene)[1:30]
> [1] "chr1" "chr2"
> [3] "chr3" "chr4"
> [5] "chr5" "chr6"
> [7] "chr7" "chr8"
> [9] "chr9" "chr10"
> [11] "chr11" "chr12"
> [13] "chr13" "chr14"
> [15] "chr15" "chr16"
> [17] "chr17" "chr18"
> [19] "chr19" "chr20"
> [21] "chrX" "chrM"
> [23] "chr1_AABR06109291_random" "chr1_AABR06109292_random"
> [25] "chr1_AABR06109293_random" "chr1_AABR06109294_random"
> [27] "chr1_AABR06109295_random" "chr1_AABR06109296_random"
> [29] "chr1_AABR06109297_random" "chr1_AABR06109298_random"
> >
>
> As a quick fix, I recommend to restrict the seq levels of the TxDb, eg:
>
>
> seqlevels(TxDb.Rnorvegicus.UCSC.rn5.refGene, force=TRUE) <-
> seqlevels(Rnorvegicus)
>
>
> Hope this helps,
> Regards, Hans-Rudolf
>
>
>
> > sessionInfo()
> R Under development (unstable) (2014-01-17 r64817)
> Platform: x86_64-unknown-linux-gnu (64-bit)
>
> locale:
> [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
> [3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
> [5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8
> [7] LC_PAPER=en_US.UTF-8 LC_NAME=C
> [9] LC_ADDRESS=C LC_TELEPHONE=C
> [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
>
> attached base packages:
> [1] parallel stats graphics grDevices utils datasets methods
> [8] base
>
> other attached packages:
> [1] TxDb.Rnorvegicus.UCSC.rn5.refGene_2.10.1
> [2] GenomicFeatures_1.15.9
> [3] AnnotationDbi_1.25.14
> [4] Biobase_2.23.6
> [5] BSgenome.Rnorvegicus.UCSC.rn5_1.3.99
> [6] BSgenome_1.31.12
> [7] Biostrings_2.31.14
> [8] XVector_0.3.7
> [9] GenomicRanges_1.15.38
> [10] GenomeInfoDb_0.99.19
> [11] IRanges_1.21.34
> [12] BiocGenerics_0.9.3
> [13] BiocInstaller_1.13.3
>
> loaded via a namespace (and not attached):
> [1] BatchJobs_1.2 BBmisc_1.5
> [3] BiocParallel_0.5.17 biomaRt_2.19.3
> [5] bitops_1.0-6 brew_1.0-6
> [7] codetools_0.2-8 DBI_0.2-7
> [9] digest_0.6.4 fail_1.2
> [11] foreach_1.4.1 GenomicAlignments_0.99.32
> [13] iterators_1.0.6 plyr_1.8.1
> [15] Rcpp_0.11.0 RCurl_1.95-4.1
> [17] Rsamtools_1.15.33 RSQLite_0.11.4
> [19] rtracklayer_1.23.16 sendmailR_1.1-2
> [21] stats4_3.1.0 stringr_0.6.2
> [23] tools_3.1.0 XML_3.98-1.1
> [25] zlibbioc_1.9.0
> >
>
>
>
>
> On 03/12/2014 12:20 PM, Hooiveld, Guido wrote:
>> Dear Michael,
>> Sorry to bother you with this, but I face a problem using QuasR which
>> I can't solve:
>> I would like to summarize my reads into a count table, but I got
>> stuck... An error is thrown that some queries cannot be found.
>> I generated my project essentially as described in the vignette using
>> the unmasked BS.genome file in R-dev, and then would like to annotate
>> it using BioC's rat TxDb. Could this be due to a mismatch between the
>> content of the BSgenome and TxDb files? (the information content of
>> the former is dated later than the latter in R-dev)?
>> Any suggestion would be appreciated!
>>
>> Thanks,
>> Guido
>>
>> sampleFile <- "samples_GH2.txt"
>> genomeFile <- "BSgenome.Rnorvegicus.UCSC.rn5"
>> proj2 <- qAlign(sampleFile=sampleFile, genome=genomeFile)
>>
>>
>>> geneLevels <- qCount(proj2,
>>> TxDb.Rnorvegicus.UCSC.rn5.refGene,reportLevel="gene")
>> Error in qCount(proj2, TxDb.Rnorvegicus.UCSC.rn5.refGene, reportLevel
>> = "gene") :
>> sequence levels in 'query' not found in alignment files:
>> chr1_AABR06109291_random, chr1_AABR06109292_random,
>> chr1_AABR06109293_random, chr1_AABR06109294_random,
>> chr1_AABR06109295_random, chr1_AABR06109296_random,
>> chr1_AABR06109297_random, chr1_AABR06109298_random,
>> chr1_AABR06109299_random, chr1_AABR06109300_random,
>> chr1_AABR06109301_random, chr1_AABR06109302_random,
>> chr1_AABR06109303_random, chr1_AABR06109307_random,
>> chr1_AABR06109308_random, chr1_AABR06109309_random,
>> chr1_AABR06109310_random, chr1_AABR06109311_random,
>> chr1_AABR06109312_random, chr1_AABR06109313_random,
>> chr1_AABR06109314_random, chr1_AABR06109315_random,
>> chr1_AABR06109316_random, chr1_AABR06109317_random,
>> chr1_AABR06109322_random, chr1_AABR06109323_random,
>> chr1_AABR06109324_random, chr1_AABR06109325_random,
>> chr1_AABR06109331_random, chr1_AABR06109332_random,
>> chr1_AABR06109333_random, chr1_AABR06109334_random,
>> chr1_AABR06109335_random, chr1_AABR06109336_random,
>> chr1_AABR06109337_random, chr1_AABR06109340_
> rando
>>>
>>
>>> sessionInfo()
>> R Under development (unstable) (2013-11-19 r64265)
>> Platform: x86_64-w64-mingw32/x64 (64-bit)
>>
>> locale:
>> [1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United
>> States.1252
>> [3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C
>> [5] LC_TIME=English_United States.1252
>>
>> attached base packages:
>> [1] parallel stats graphics grDevices utils datasets
>> methods base
>>
>> other attached packages:
>> [1] TxDb.Rnorvegicus.UCSC.rn5.refGene_2.10.1 BiocInstaller_1.13.3
>> [3] QuasR_1.3.13 Rbowtie_1.3.1
>> [5] rtracklayer_1.23.15 GenomicFeatures_1.15.9
>> [7] AnnotationDbi_1.25.14 Biobase_2.23.6
>> [9] GenomicRanges_1.15.38 GenomeInfoDb_0.99.19
>> [11] IRanges_1.21.34 BiocGenerics_0.9.3
>>
>> loaded via a namespace (and not attached):
>> [1] BatchJobs_1.2 BBmisc_1.5
>> BiocParallel_0.5.8
>> [4] biomaRt_2.19.3 Biostrings_2.31.14 bitops_1.0-6
>> [7] brew_1.0-6 BSgenome_1.31.12 codetools_0.2-8
>> [10] DBI_0.2-7 digest_0.6.4 fail_1.2
>> [13] foreach_1.4.1 GenomicAlignments_0.99.32 grid_3.1.0
>> [16] hwriter_1.3 iterators_1.0.6 lattice_0.20-24
>> [19] latticeExtra_0.6-26 plyr_1.8.1
>> RColorBrewer_1.0-5
>> [22] Rcpp_0.11.0 RCurl_1.95-4.1
>> Rsamtools_1.15.33
>> [25] RSQLite_0.11.4 sendmailR_1.1-2
>> ShortRead_1.21.16
>> [28] stats4_3.1.0 stringr_0.6.2 tools_3.1.0
>> [31] XML_3.98-1.1 XVector_0.3.7 zlibbioc_1.9.0
>>>
>>
>> -----Original Message-----
>> From: bioconductor-bounces at r-project.org
>> [mailto:bioconductor-bounces at r-project.org] On Behalf Of Michael Stadler
>> Sent: Tuesday, March 04, 2014 13:20
>> To: bioconductor at r-project.org
>> Subject: Re: [BioC] QuasR: problem accessing
>> BSgenome.Rnorvegicus.UCSC.rn5
>>
>> Hi Guido and Herve,
>>
>> You were both spot on. In the development version 1.3.9 of QuasR, we
>> adapted to the new (BioC 2.14) type of BSgenome packages, so QuasR >=
>> 1.3.9 only works with these.
>>
>> One clarification regarding the treatment of masks in QuasR:
>>
>> - QuasR <= 1.2.x has ignored masks in BSgenome packages
>> during alignment
>>
>> - QuasR >= 1.3.9 now handles BSgenome objects with or without masks,
>> so that the following the statement:
>>
>> qAlign(..., genome="BSgenome.Rnorvegicus.UCSC.rn5")
>>
>> is equivalent to the old behaviour (no masking), but the statement:
>>
>> qAlign(..., genome="BSgenome.Rnorvegicus.UCSC.rn5.masked")
>>
>> now aligns against a masked genome.
>>
>> I hope this helps.
>>
>> Cheers,
>> Michael
>>
>>
>>
>> On 03.03.2014 14:26, Hooiveld, Guido wrote:
>>> Hi Herve,
>>> Good point.
>>> I checked and version 1.3.17 was installed because that (still) is
>>> the latest (binary) version of the package available for Windows. I
>>> meanwhile re-installed the BSgenome package from source, and now
>>> QuasR is working on my Win7 machine as it should be (thus with
>>> v1.3.99). Based on your comments I am currently using the masked
>>> file, because that is the equivalent of the old file.
>>>
>>> Thanks again,
>>> Guido
>>>
>>>
>>> -----Original Message-----
>>> From: Hervé Pagès [mailto:hpages at fhcrc.org]
>>> Sent: Sunday, March 02, 2014 02:57
>>> To: Hooiveld, Guido; bioconductor at r-project.org
>>> Subject: Re: [BioC] QuasR: problem accessing
>>> BSgenome.Rnorvegicus.UCSC.rn5
>>>
>>> Hi Guido,
>>>
>>> When using BioC devel, things can move fast so it's important that
>>> you update your packages often (with biocLite()) in order to keep
>>> everything in sync. In your case it looks like the version of the
>>> BSgenome package you have (1.3.17) is lagging behind the version
>>> currently in BioC devel (1.3.99).
>>>
>>> Note that starting with BioC 2.14 (which will be released in April,
>>> but corresponds to BioC devel at the moment), many BSgenome packages
>>> exist in 2 flavors: raw genome or masked genome. For example, for rn5,
>>> there is now
>>>
>>> BSgenome.Rnorvegicus.UCSC.rn5 raw genome
>>> BSgenome.Rnorvegicus.UCSC.rn5.masked masked genome
>>>
>>> BSgenome.Rnorvegicus.UCSC.rn5.masked is equivalent to the old
>>> BSgenome.Rnorvegicus.UCSC.rn5 in BioC <= 2.13 which was already
>>> masked. However, in BioC <= 2.13, there was no non-masked version of
>>> rn5. See announcement here for more details:
>>>
>>> https://stat.ethz.ch/pipermail/bioc-devel/2014-January/005150.html
>>>
>>> I don't know if QuasR cares about the masks though. Maybe they're
>>> just ignored, in which case I guess you could just stick to
>>> BSgenome.Rnorvegicus.UCSC.rn5.
>>>
>>> Cheers,
>>> H.
>>>
>>>
>>> On 02/28/2014 03:44 PM, Hooiveld, Guido wrote:
>>>> Hello,
>>>> I am using R-dev, and would like to run QuasR to align a RNA-seq
>>>> experiment.
>>>> Unfortunately, I can't get past the indexing step because somehow
>>>> BSgenome cannot be accessed by QuasR.
>>>> I think this is due because it can be accessed by using
>>>> "Rnorvegicus" rather than by (the expected)
>>>> "BSgenome.Rnorvegicus.UCSC.rn5".
>>>>
>>>> Is this to be changed in QuasR, or the BSgenome?
>>>>
>>>> Thanks,
>>>> Guido
>>>>
>>>>
>>>>> library(QuasR)
>>>>> library(BSgenome)
>>>>> library(Rsamtools)
>>>>> library(rtracklayer)
>>>>> library(GenomicFeatures)
>>>>> library(BSgenome.Rnorvegicus.UCSC.rn5)
>>>>> sampleFile <- "samples_GH2.txt"
>>>>> genomeFile <- "BSgenome.Rnorvegicus.UCSC.rn5"
>>>>>
>>>>> proj <- qAlign(sampleFile=sampleFile, genome=genomeFile)
>>>> alignment files missing - need to:
>>>> create alignment index for the genome
>>>> create 18 genomic alignment(s)
>>>> will start in ..9s..8s..7s..6s..5s..4s..3s..2s..1s
>>>> Error in get(genome) : object 'BSgenome.Rnorvegicus.UCSC.rn5' not
>>>> found
>>>>>
>>>>
>>>> # The info is there, so this does work, but it cannot be effectuated
>>>> in QuasR
>>>>> Rnorvegicus
>>>> Rat genome
>>>> |
>>>> | organism: Rattus norvegicus (Rat)
>>>> | provider: UCSC
>>>> | provider version: rn5
>>>> | release date: Mar. 2012
>>>> | release name: RGSC 5.0
>>>> |
>>>> | single sequences (see '?seqnames'):
>>>> | chr1 chr2 chr3 chr4 chr5 chr6 chr7 chr8 chr9
>>>> chr10 chr11
>>>> | chr12 chr13 chr14 chr15 chr16 chr17 chr18 chr19 chr20
>>>> chrX chrM
>>>> |
>>>> | multiple sequences (see '?mseqnames'):
>>>> | random chrUn upstream1000 upstream2000
>>>> upstream5000
>>>> |
>>>> | (use the '$' or '[[' operator to access a given sequence)
>>>>> seqlengths(Rnorvegicus)
>>>> chr1 chr2 chr3 chr4 chr5 chr6
>>>> chr7 chr8
>>>> 290094216 285068071 183740530 248343840 177180328 156897508
>>>> 143501887 132457389
>>>> chr9 chr10 chr11 chr12 chr13 chr14
>>>> chr15 chr16
>>>> 121549591 112200500 93518069 54450796 118718031 115151701
>>>> 114627140 90051983
>>>> chr17 chr18 chr19 chr20 chrX chrM
>>>> 92503511 87229863 72914587 57791882 154597545 16313
>>>>>
>>>>
>>>>> genomeFile <- "Rnorvegicus"
>>>>> proj <- qAlign(sampleFile=sampleFile, genome=genomeFile)
>>>> The specified genome is not a fasta file or an installed BSgenome.
>>>> Connecting to Bioconductor and searching for a matching genome
>>>> (internet connection required)...OK Bioconductor version 2.14
>>>> (BiocInstaller 1.13.3), ?biocLite for help
>>>> Error: Rnorvegicus is not available in Bioconductor. Type
>>>> available.genomes() for a complete list
>>>>>
>>>>
>>>>> sessionInfo()
>>>> R Under development (unstable) (2013-11-19 r64265)
>>>> Platform: x86_64-w64-mingw32/x64 (64-bit)
>>>>
>>>> locale:
>>>> [1] LC_COLLATE=English_United States.1252 [2] LC_CTYPE=English_United
>>>> States.1252 [3] LC_MONETARY=English_United States.1252 [4]
>>>> LC_NUMERIC=C [5] LC_TIME=English_United States.1252
>>>>
>>>> attached base packages:
>>>> [1] parallel stats graphics grDevices utils datasets methods
>>>> [8] base
>>>>
>>>> other attached packages:
>>>> [1] BiocInstaller_1.13.3
>>>> BSgenome.Rnorvegicus.UCSC.rn5_1.3.17
>>>> [3] GenomicFeatures_1.15.7 AnnotationDbi_1.25.9
>>>> [5] Biobase_2.23.5 rtracklayer_1.23.14
>>>> [7] Rsamtools_1.15.29 BSgenome_1.31.12
>>>> [9] Biostrings_2.31.14 XVector_0.3.7
>>>> [11] QuasR_1.3.12 Rbowtie_1.3.0
>>>> [13] GenomicRanges_1.15.31 IRanges_1.21.32
>>>> [15] BiocGenerics_0.9.3
>>>>
>>>> loaded via a namespace (and not attached):
>>>> [1] BatchJobs_1.2 BBmisc_1.5
>>>> [3] BiocParallel_0.5.8 biomaRt_2.19.3
>>>> [5] bitops_1.0-6 brew_1.0-6
>>>> [7] codetools_0.2-8 DBI_0.2-7
>>>> [9] digest_0.6.4 fail_1.2
>>>> [11] foreach_1.4.1 GenomicAlignments_0.99.26
>>>> [13] grid_3.1.0 hwriter_1.3
>>>> [15] iterators_1.0.6 lattice_0.20-24
>>>> [17] latticeExtra_0.6-26 plyr_1.8.1
>>>> [19] RColorBrewer_1.0-5 Rcpp_0.11.0
>>>> [21] RCurl_1.95-4.1 RSQLite_0.11.4
>>>> [23] sendmailR_1.1-2 ShortRead_1.21.14
>>>> [25] stats4_3.1.0 stringr_0.6.2
>>>> [27] tools_3.1.0 XML_3.98-1.1
>>>> [29] zlibbioc_1.9.0
>>>>>
>>>>
>>>>
>>>> [[alternative HTML version deleted]]
>>>>
>>>> _______________________________________________
>>>> Bioconductor mailing list
>>>> Bioconductor at r-project.org
>>>> https://stat.ethz.ch/mailman/listinfo/bioconductor
>>>> Search the archives:
>>>> http://news.gmane.org/gmane.science.biology.informatics.conductor
>>>>
>>>
>>> --
>>> Hervé Pagès
>>>
>>> Program in Computational Biology
>>> Division of Public Health Sciences
>>> Fred Hutchinson Cancer Research Center
>>> 1100 Fairview Ave. N, M1-B514
>>> P.O. Box 19024
>>> Seattle, WA 98109-1024
>>>
>>> E-mail: hpages at fhcrc.org
>>> Phone: (206) 667-5791
>>> Fax: (206) 667-1319
>>>
>>> _______________________________________________
>>> Bioconductor mailing list
>>> Bioconductor at r-project.org
>>> https://stat.ethz.ch/mailman/listinfo/bioconductor
>>> Search the archives:
>>> http://news.gmane.org/gmane.science.biology.informatics.conductor
>>>
>>
>> --
>> --------------------------------------------
>> Michael Stadler, PhD
>> Head of Computational Biology
>> Friedrich Miescher Institute
>> Basel (Switzerland)
>> Phone : +41 61 697 6492
>> Fax : +41 61 697 3976
>> Mail : michael.stadler at fmi.ch
>>
>> _______________________________________________
>> Bioconductor mailing list
>> Bioconductor at r-project.org
>> https://stat.ethz.ch/mailman/listinfo/bioconductor
>> Search the archives:
>> http://news.gmane.org/gmane.science.biology.informatics.conductor
>>
>> _______________________________________________
>> Bioconductor mailing list
>> Bioconductor at r-project.org
>> https://stat.ethz.ch/mailman/listinfo/bioconductor
>> Search the archives:
>> http://news.gmane.org/gmane.science.biology.informatics.conductor
>>
>
> _______________________________________________
> Bioconductor mailing list
> Bioconductor at r-project.org
> https://stat.ethz.ch/mailman/listinfo/bioconductor
> Search the archives:
> http://news.gmane.org/gmane.science.biology.informatics.conductor
--
Hervé Pagès
Program in Computational Biology
Division of Public Health Sciences
Fred Hutchinson Cancer Research Center
1100 Fairview Ave. N, M1-B514
P.O. Box 19024
Seattle, WA 98109-1024
E-mail: hpages at fhcrc.org
Phone: (206) 667-5791
Fax: (206) 667-1319
More information about the Bioconductor
mailing list