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Introduction of LF and NLF Gram-Negative Bacteria on MacConkey Medium MacConkey agar/ medium is recommended for use as a selective, differential, and indicator growth medium for the isolation of gram-negative bacilli including coliform organisms and enteric pathogens, on the basis of lactose fermentation. Peptones (meat …
Introduction of India Ink Preparation Cryptococcal meningitis occurs in immunodeficient patients and when meningitis is clinically suspected, for example, patients with HIV/AIDS, or when yeast cells with lymphocytes are detected when performing Cerebrospinal fluid (CSF) cell count or examining Gram smear, examine India ink preparation …
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 nutrient agar and they need chocolate agar to grow (H. influenzae) due to having X, V, and both X and V growth factors in it. …
Definition of Dermatophytes Dermatophytes are a common label for a group of three types of keratinophilic fungi that infect keratinized tissues causing diseases known as dermatophytoses and they are Trichophyton, Microsporum, and Epidermophyton that commonly cause skin, nail, and hair disease in our body. Differences among Trichophyton, Microsporum, and Epidermophyton The …
Introduction of Staphylococcus and Micrococcus Staphylococcus (pleural-staphylococci) is spherical, non-motile, gram-positive in singles, pairs, and clusters. On nutrient agar, growth is opaque and golden yellow or white color. Catalase and coagulase test positive (Staphylococcus aureus), oxidase negative, aerobic or facultative anaerobe. Parasite of humans and …
Introduction of Streptococcus pneumoniae and Viridans streptococci Streptococcus pneumoniae is also called pneumococcus and pneumococcus is the commensals of the upper respiratory tract. It is an important etiological agent of pneumonia and otitis media in children that differs from streptococci in its morphology (diplococci), bile …
Introduction of Amoebic dysentery and Bacillary dysentery Amoebic dysentery or amoebiasis is an intestinal infection caused by a unicellular (protozoan) parasite, Entamoeba histolytica whereas bacillary dysentery or shigellosis is a bacterial disease caused by a group of non-motile bacteria called Shigella species. Differences between Amoebic …
Introduction of COVID-19 PCR Laboratory COVID-19 PCR Laboratory is the most common laboratory which was used in the COVID-19 pandemic for the diagnosis of COVID-19 (detecting genes of SARS-CoV-2) as well as prognosis COVID patients. To my knowledge, there is no country where there is …