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Specimen Collection Pulmonary tuberculosis: threat to both patients and others so sample should be collected and handled in a safe manner. Successful identification of pathogens... Read more
VITAMIN A Retinol Biologically active forms – retinoids: retinol, retinal, retinoic acid. Major vit. A precursor (provitamins) → plants carotenoids. The foodstuff of animals origin... Read more
Neisseria gonorrhoeae Etiology of Gonorrhea Greek (gonos – seed and rhoia- flow) First described in urethral discharge by Neisser in 1879 Cultured by Bumm in... Read more
Mammals excrete their nitrogenous waste products in the form of urea and hence they are called ureotelic organisms. The urea is produced in liver and... Read more