R programming practice_intermediate level

1. Bioconductor package: org.Hs.eg.db

org.Hs.eg.db is a bioconductor package for genome wide annotation for Human, primarily based on mapping using Entrez Gene identifiers.
Install org.Hs.eg.db package:

if (!requireNamespace("BiocManager", quietly = TRUE))
install.packages("BiocManager")
BiocManager::install("org.Hs.eg.db", version = "3.8")
library(org.Hs.eg.db)