[Precise increase in the sensitivity of Streptococcus faecalis to folic acid in the presence of acetate buffer. Applcation to microbiologic determination of folic acid].
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Acetates↗
Biomedical subjects
R Valencia
Publications and source records attributed to R Valencia.
[Sensitivity of microorganisms to growth factors. I. Determination of folic acid with Streptococcus faecalis and composition of the basal media].
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Animals↗
[Intracellular localization of cobalamins and folates in rat liver].
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Animals↗
[Vitamin B-12 deficiency in germ-free animals (terotogenous anomalies and hematologic symptoms].
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Abortion, Missed↗
[Influence of culture conditions on the production of cobalamins and on their fermentation by the bacteria of the intestinal flora of the rat].
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Animals↗
[Characteristics of avitaminosis B12 in axenic and normal rats].
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Abortion, Spontaneous↗
[Gestation and viability of the litter in amicrobial and conventional rats submitted to a vitamin B 12 deficient diet].
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Abortion, Veterinary↗
[Effect of the intestinal flora and the sex factor in the using up of vitamin B 12 reserves in rats].
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Animals↗
[Role of the intestinal microflora (autochthonous flora, Veillonella monoflora, absence of flora) in the rat with vitamin B12 subdeficiency].
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Animals↗
[Biosynthesis in vitro of vitamin B12 and other cobalamins by bacterial strains isolated from the digestive tract of the rat].
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Animals↗
[Warning systems: a priority in epidemiological surveillance].
One of the functions of public health is to reduce the impact of emergency situations; hence the need to establish an early warning and response system. Community reactions to emerging and reemerging diseases, exposure to environmental risks, and potential terrorist acts are the factors that have that have mainly contributed to the instauration of warning systems based on mathematical models. Information is obtained from diverse sources (for example, laboratory data, sentinel physicians, or visits to particular websites). Once the data are gathered, and the situation provoking the alert is detected, control measures to reduce risks and minimize damage are taken at the earliest.
Disease Outbreaks↗
[Disordered secretion of antidiuretic hormone in central nervous system infections].
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Adolescent↗
[Classification of cusp types of permanent lower first molars in a Mexican population, according to evolutionary criteria].
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Anthropology, Physical↗
[Levels of chromatin condensation and activity].
The main progresses which occurred last years in the knowledge of chromatin, in its biochemical components, structure and organization levels, are briefly outlined. Inhibition of transcriptional activity is examined at the molecular, cellular and chromosomal levels. The different states of chromatin condensation according to physiopathological conditions are more particularly reviewed together with recent data on transcriptional regulation depending on histone and DNA modifications.
Animals↗