Introduction Smallest micro organisms Free living in nature Can grow in cell free medium Causes human infection M. pneumoniae: Pneumonia Ureaplasma urealyticum: non-gonococcal urethritis M. hominis and M. gentalium: genital tract infections. Cell wall absent Highly pleomorphic in nature Has no fixed shape and size Absence of cell wall precursors that are Muramic acid diaminopimelic … Read more
Platelets also called thrombocytes are the formed elements of blood. They are small, non-nucleated colorless and moderately refractive bodies. They are considered to be the fragments of the cytoplasm being formed elements of blood. They are about 2.5µ (2 to 4µ) in diameter and 7.5 cu µ (7 to 8 cu µ) in volume. They … Read more
Because of the variability in the clinical manifestations of infection and frequent absence of jaundice, leptospirosis should always be considered in case of undiagnosed pyrexia (PUO). It is done especially when the patient could have been exposed to infection through the nature or place of work or in some other way. After an incubation period … Read more
Properties This type of immunoglobulin accounts or constitutes 5-10% of total serum immunoglobulin in adults. The serum concentration is 5-2 mg per 100 ml. The half-life of IgM is about 5 days. It can be produced in a T-independent manner. Monomeric IgM has molecular weight of 180,000 Da which is expressed as membrane bound antibody … Read more