Human reproductive ecology to aid infant survival and growth. Lactational strategies vary cross-culturally, but can typically be defined by sibling sets and sex ratios, frequency of nursing, entire lactational duration, and milk composition. Milk is composed of my bioconstituents, but only a few will be outlined here. In the first days of puerperium, the first milk is thick and yellowish, also called colostrum. For weeks after that, mature milk is expressed and it has been shown that fetal-mammary gland signaling occurs even before birth in determining milk type and concentrations based on the fetus sex. Colostrum plays an important role in establishing the
Death Is Called Engelchen Death Is Called Engelchen Death Is Called Engelchen () is a 1963 Czechoslovak war film directed by Ján Kadár and Elmar Klos. It was entered into the 3rd Moscow International Film Festival where it won a Golden Prize. At the end of the Second World War Zlín is liberated by advancing Soviet army. Young Czechoslovak partisan named Pavel was injured in a gunfight with Germans and lies in hospital. He is paralyzed and while recovering, he spends his days by lying on his back. He recalls memories from his life during the war - his experience as a resistance fighter,