Sunday, February 7, 2010
Infecting agents may be identified (1) by direct examination (2) by culture, (3) by animal inoculation. The following are examples.
- Direct examination. Trepidation palladium by dark ground illumination of serum from a cancer; N. gonorrheal or N. meningitis by microscopically examination of pus obtained from a urethral discharge or cerebration fluid respectively stained by Gram’s Method; and micro. Tuberculosis from sputum, stained by Ziegler-Nelsen method; smallpox by the microscopically demonstration of the inclusion bodies in material from a vesicle; malaria by examination of a stained blood smear.
- Culture. C. diphtheria from a throat swab, S. typhoid from health blood, each, coil from urine, Strep. Pneumonia from sputum, dysentery bacilli from faces. Many viruses may be grown in tissue culture.
- Animal Inoculation. Micro, tuberculosis or Respiratory Procter-haemorrhoid by inoculation of a guinea-pig.
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