Neisseria Gonorrhoeae Disease Neisseria gonorrhoeae (Gonococci) Neisseria gonorrhoeae is a venereal disease 1. Morphological characters They are gram negative,non-sporeforming diplococci with concave adjacent side. It appear like a shape of a kidney. It contains pili that provide adhesion to mucosal surface and inhibit phagocytosis. 2. Cultural characters These gonococci cells grow aerobically as well as anaerobically. These organism can… Read More

 Neisseria meningitidis. Introduction It is a gram negative, non-motile cocci arranged in pairs called as diplococci. Neisseria are aerobic, non-sporulating, oxidase positive cocci. Neisseria meningitidis causes cerebrospinal fever that is Meningococcal meningitis. 1. Morphological characters They are gram negative,spherical shape cocci with flattened adjacent side. Its size ranges from 0.6-0.8 micrometer. Its size,shape and staining… Read More

Disease caused by Streptococcus pneumoniae The Streptococcus pneumoniae is gram-positive lancet shape bacteria. It may be diplococcus or streptococcus. Pneumococcus is non-motile, non-spore forming capsulated bacteria. They may be aerobic or facultative anaerobic in nature. They are a normal inhabitant of human respiratory tract Pneumococcus bacteria may be an important cause of pneumonia, otitis, sinusitis, bronchitis,… Read More

Medical Microbiology Medical microbiology is a branch of science that deals with the study of of pathogenic micro-organisms and is concern with disease, diagnosis ,prevention, control and treatment. Diseases caused by micro-organisms Staphylococcus aureus 1. Morophology Staphylococcus aureus are gram-positive spherical cocci approximately 1 micrometer in diameter.These cells may be arranged in singly,in pairs,shorts chains or in… Read More

Taxonomic Differentiation of Microbes

Definition of Microbiology It is a branch of science that deals with the study of microscopic forms of life these micro-organisms are less than 1 mm in size. Characteristics of Micro-organisms  These micro-organisms are very small in size generally less than 1 mm. They are not visible through our naked eyes. These organisms are either unicellular… Read More