title: Observations suggesting the development of streptococci from pleomorphic filamentous gram negative bacteria.
mesh_terms: D001431:Bacteriological Techniques; D006190:Haemophilus / Q000302:isolation & purification; D006801:Humans; D009174:Mycoplasma / Q000302:isolation & purification*; D010614:Pharynx / Q000382:microbiology; D013291:Streptococcus / Q000254:growth & development*