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The microalga Chaetoceros calcitrans was cultured with three concentrations of vitamin B12 (cyanocobalamin) to supplement the feed for the oyster Crassostrea gigas. In two additional assays, vitamins B12 and B9 (folic acid) were dissolved in the water to increase the methyl donors necessary for the one‐carbon cycle and DNA methylation. Microalgae did not present differences in their concentration...
Pacific lion-paw scallops were collected from natural aggregations in Laguna Ojo de Liebre (Pacific Ocean), the Gulf of California, and from aquaculture facilities for genetic diversity analyses. Mitochondrial DNA sequencing uncovered two highly supported clades separated by 2.5% divergence. Data from ten microsatellite markers suggest individuals from these mitogroups are introgressed, raising questions...
In the late 1990s, community officials in the inner city neighborhood of Central Havana consulted researchers at INHEM (National Institute of Hygiene, Epidemiology, and Microbiology) for assistance in evaluating the effectiveness of interventions that were being undertaken to improve the quality of life and human health amid the severe economic crisis that Cuba was experiencing. The ecosystem approach...
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