title: Mapping of the pneumococcus chromosome: differences between recipient strains varying in hex property and the location of the opt-r2 gene.
mesh_terms: D002874:Chromosome Mapping; D002876:Chromosomes, Bacterial / Q000648:ultrastructure; D004352:Drug Resistance, Microbial; D005796:Genes; D013296:Streptococcus pneumoniae / Q000235:genetics*