background: tuberculosis (tb) is an increasing public health concern worldwide. on a global scale it has a devastating impact in developing nations. genital tb, an extrapulmonary form, is not uncommon particularly in areas where pulmonary tb is prevalent. genital tb may be asymptomatic or may even masquerade as other gynaecological conditions; hence, diagnosis requires a high degree of suspicio...

The direct F.A. Method has been used for diffe­rentiation of virulent and avirulent lines of influenza viruses. A positive fluorescence was obtained indi­cating the level of virus in the tissues, sorbing with dried mouse powder helped to reduce non-specific staining. The virulent line showed the greatest num­ber of fluorescent cells with the peak at 10 hours. the non-virulent lines showed a gra...

We have developed a quick, simple technique for the fluorescent staining of bacterial endospores. This technique was developed using Bacillus subtilis endospores. Our technique requires minimal sample heating so it can safely be carried out entirely in a glove-box. The endospores stain diagnostically as an oval with a standard fluorescent nucleotide stain, acridine orange.

I. Principles of Tmmunofluorescent Staining.................................................. A. Fluorescent Antibody Labeling........................................................ B. Immunofluorescent Staining Procedures............................................... C. Controls.............................................................................. D. Nonspecific Staining................