Fresh 44+ Diplococcus Pneumoniae Under Microscope. Diplococcus pneumoniae streptococcus (diplococcus) pneumoniae, w.m. Pneumonia bacteria, diplococcus pneumoniae, seen under a microscope. Electron microscope photomicrograph of streptococcus pneumoniae. Pneumoniae) under immunoelectron microscopy because of the thick. Diplococcus Pneumoniae Under Microscope - Details Public Health Image Library Phil Pneumococci or streptococcus pneumoniae have complex nutritional requirements and readily grows in a media containing blood, serum or sugars. It was termed diplococcus pneumonia in 1926 due to its propensity to exist in pairs of cells, and renamed streptococcus pneumoniae in 1974 because of its formation of chains in liquid.