The isolated bacterial strain was a Gram-positivestaphylococcus
To obtain morphological and staining characteristics of the pathogen, the isolated strain grew into a small colony with a diameter of 1~2 mm and showed the specific morphological character with light gray, moist, round, uplifted, smooth and neat edge (Fig. 2A).
Then the single colony was stained with Gram’s staining reagent and examined by a microscope. The colony is positive to Gram’s staining and showed the morphological character with cocci, single or double clusters, or short-chain and long-chain arrangement under oil microscope (Fig. 2B). These results indicate that the pathogenic bacterial belongs to Staphylococcus.