library("Biostrings") Loading required package: BiocGenerics Attaching package: ‘BiocGenerics’ The following objects are masked from ‘package:dplyr’: combine, intersect, setdiff, union The following objects are masked from ‘package:stats’: IQR, mad, sd, var, xtabs The following objects are masked from ‘package:base’: anyDuplicated, aperm, append, as.data.frame, basename, cbind, colnames, dirname, do.call, duplicated, eval, evalq, Filter, Find, get, grep, grepl, intersect, is.unsorted, lapply, Map, mapply, match, mget, order, paste, pmax, pmax.int, pmin, pmin.int, Position, rank, rbind, Reduce, rownames, sapply, setdiff, sort, table, tapply, union, unique, unsplit, which.max, which.min Loading required package: S4Vectors Loading required package: stats4 Attaching package: ‘S4Vectors’ The following objects are masked from ‘package:dplyr’: first, rename The following objects are masked from ‘package:base’: expand.grid, I, unname Loading required package: IRanges Attaching package: ‘IRanges’ The following objects are masked from ‘package:dplyr’: collapse, desc, slice Loading required package: XVector Loading required package: GenomeInfoDb Attaching package: ‘Biostrings’ The following object is masked from ‘package:base’: strsplit

这段信息提示是在加载R语言的Biostrings包时出现的，其中包含了一些被遮蔽的函数。同时，也加载了其他依赖的包S4Vectors、IRanges和XVector，以及GenomeInfoDb。这些包主要是用于生物学数据处理的。

在加载Biostrings包后，可以使用其中的函数来处理DNA和蛋白质序列数据，例如读取FASTA格式的文件，进行序列比对和搜索等操作。