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Fungus Mycology is the science that deals with the study of fungus. Medical mycology: The science that deals with the study of fungi that causes the disease is called medical mycology. General Features Fungus The fungi are a group of eukaryotic organisms. They are found in soil, water, air, and decaying matter are the main sources. They have a diversity of morphological appearances, depending on the species. They are heterotrophic organisms that lack the definite root,...

Introduction of Thiosulfate Citrate Bile Salts Sucrose (TCBS) Agar Vibrio cholerae is the causative agent of cholera and Thiosulfate Citrate bile salts sucrose (TCBS) agar a selective as well as differential culture medium used for selective isolation of  this bacterium including its species from a variety of clinical and nonclinical specimens. TCBS agar has a very high pH (8.5-9.5) which suppresses growth of intestinal flora other than Vibrio spp. The bile salts inhibit growth of gram-positive microorganisms. Vibrio spp. produce either yellow or green colonies...

 Introduction  of Optochin Sensitivity Test Use of optochin sensitivity test in blood agar at the time of inoculating sputum specimen; this is doing so because of sputum carrying numerous normal flora and the optochin disk is put on a secondary zone of streaking. The optochin is also called ethylhydrocupreine hydrochloride. Principle of Optochin Sensitivity Test The technique applying so for the presumptive identification of Streptococcus pneumoniae , which is optochin-sensitive, from other alpha -haemolytic streptococci, which are resistant since, in the...