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The Beginning of Life: Fertilization and Immediately Postfertilization During oogenesis, the oocyte accumulates epigenetic marks both on histones and on DNA, and this process continues until just before ovulation

Plos One , 8(12), e82417

While the majority of B12 sources in our diet come from animal foods, only about half is effectively absorbed

2012 May 25;149 (5):1060-72
