[The pathogenic nature of Pneumococcus known for 100 years (Albert Fränkel)].
D001432:Bacteriology / Q000266:history; D005858:Germany; D049672:History, 19th Century; D049673:History, 20th Century; D013296:Streptococcus pneumoniae / Q000472:pathogenicity*
100 éve ismert a Pneumococcus pathogén természete.