title: Serologic and genetic relationships between pneumococci and other respiratory streptococci.
mesh_terms: D000818:Animals; D003470:Culture Media; D006801:Humans; D007106:Immune Sera; D051379:Mice; D012137:Respiratory System / Q000382:microbiology*; D013290:Streptococcal Infections; D013291:Streptococcus / Q000145:classification* / Q000302:isolation & purification*; D013296:Streptococcus pneumoniae / Q000302:isolation & purification*
chemical_list: D003470:Culture Media; D007106:Immune Sera