Introduction of E. coli Escherichia coli is a member of the family, Enterobacteriaceae and it is a Gram-negative, aerobe, and facultative…
Introduction of Serratia marcescens Serratia is a member of the family Enterobacteriaceae, and it is a Gram-negative, facultatively anaerobic, rod-shaped bacterium…
Introduction of Enterobacteriaceae The family Enterobacteriaceae was first proposed by Rahn in 1936 and it is a very large group…
Fig. Lactose Fermenter (LF)-Pink colony-Right side and Non-Lactose Fermenter (NLF)-pale or no color change-Left side Gram-Negative Bacteria on MacConkey agar…
Introduction of Haemophilus The genus Haemophilus is a pleomorphic Gram-negative coccobacilli fastidious bacteria and thus they do not grow on an ordinary medium like…
Introduction of Staphylococcus and Micrococcus Staphylococcus (pleural-staphylococci) is spherical, non-motile, gram-positive in singles, pairs, and clusters. On nutrient agar, growth…
Introduction of Streptococcus pneumoniae and Viridans streptococci Streptococcus pneumoniae is also called pneumococcus and pneumococcus is the commensals of the…
Introduction of String Test String test is a special test of bacteria to identify Vibrio cholerae (String test positive) from…
Introduction of Gram-Positive Bacteria Identification Identification of Gram-positive bacteria is a little bit harder than Gram-negative bacteria since the most…
Triple Sugar Iron Agar Test The triple Sugar Iron (TSI) Agar test is a combo test and is useful for…