منابع مشابه
Before birth--after death.
F our recent events have reminded us that many people are concerned about what happens before birth and after death, even if what happens before birth happens to those who will never be born and even if the near death happenings occur after death and to those who cannot care about them. The recent events involve a decision of the European Court of Human Rights, a decision of the UK Human Fertil...
متن کاملSenescence— Before Birth
Cellular senescence— defined as a process of stable cell-cycle arrest—was first identified as a biological state that marked the end of a cell’s replicative life (Hayflick, 1965). In the investigations that followed, senescence was established as a component of disease states {e.g. DNA damage} (Kuilman et al., 2010), and was correlated with aging-associated disorders (Keyes et al., 2005; Baker ...
متن کاملLove before Sex
Much has been debated about the benefit of sexual over asexual reproduction in terms of evolutionary fitness. Here we focus on the advantage that may be brought about by the process of mating, where the choosing of mates contributes to the increase in fitness in a constructive way. We carry out computer simulations of such mating systems and investigate, on one hand, how mate phenotypes contrib...
متن کاملConnecting with Baby Before Birth
Pregnancy can be daunting. Prenatal gadgets tempt expecting mothers at every turn, as the market is saturated with ever-changing options for mommy, daddy and baby. But underneath it all, we are simply driven by a common desire to fulfill the ideals of motherhood and to connect with our babies. Stroller technology alone is enough to baffle the mind. Maybe next year we’ll see an organic, Tempur-P...
متن کاملNonrandom sex composition of gerbil, mouse, and hamster litters before and after birth.
Examining data describing the sex composition of 1074 Caesarean-delivered litters of house mice, 253 Caesarean-delivered and 265 vaginally delivered litters of Mongolian gerbils, and 854 vaginally delivered litters of golden hamsters, we determined whether segregation of sexes between uterine horns and correlations between litter size and litter sex ratio were present in each of the three roden...
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ژورنال
عنوان ژورنال: The Journal of Pediatrics
سال: 2015
ISSN: 0022-3476
DOI: 10.1016/j.jpeds.2015.06.022