[Detection of micro quantities of DDT, heptachlor and lindane in water by the method of thin-layer chromatography with fluorescein].
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Chromatography, Thin Layer↗
Biomedical subjects
T M Petrova
Publications and source records attributed to T M Petrova.
[Isthmotomy and plasty of the pelvis of the horseshoe kidney].
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Adult↗
[Growth and spore germination factors of various strains of Bacillus sphaericus].
The work was aimed at studying the requirements of sixteen Bacillus sphaericus strains with a different larvicidal activity in amino acids and some other compounds necessary for their growth and spore germination. Most of the strains were found to require arginine, glutamate, methionine, threonine, serine, glycine, alanine and lysine, but they did not assimilate phenylalanine and proline. Arginine, methionine and glutamate were shown to be the most effective inductors of spore germination. Specific differences were detected in the requirements of virulent and avirulent strains. Glucose repressed both spore germination and spore formation.
Amino Acids↗
[Spontaneous bacteriophage induction in Bacillus thuringiensis].
The production of temperate bacteriophages was studied in the process of batch cultivation of three Bacillus thuringiensis lysogenic strains. Phage titres were determined using an indicator culture (IPM-1148). The growth of bacteriophages was induced when thermoactivated spores germinated. Some cells (1.10(-3)-2.10(-3)) underwent lysis without their division. The subsequent lytic cycles occurred in the actively growing culture. Phage titres ceased to rise before the exponential growth phase was over.
Bacillus thuringiensis↗
[The use of thin layer chromatography in the determination of heptachlorine, DDT and lindane in the plant material and soil].
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Bridged-Ring Compounds↗