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Sputum from a patient with pneumococcal pneumonia

Sputum from a patient with pneumococcal pneumonia
Gram stain of sputum (x1000) shows abundant inflammatory cells and gram-positive diplococci; Streptococcus pneumoniae was identified from this specimen by culture and by the optochin disk test.
Courtesy of Harriet Provine.
Graphic 75924 Version 5.0