منابع مشابه
Primoridal germ cell specification: a context-dependent cellular differentiation event
During embryonic development, the foundation of the germline is laid by the specification of primordial germ cells (PGCs) from the postimplantation epiblast via bone morphogenetic protein (BMP) and WNT signalling. While the majority of epiblast cells undergo differentiation towards somatic cell lineages, PGCs initiate a unique cellular programme driven by the cooperation of the transcription fa...
متن کاملGenetic and cellular analysis of male germ cell development.
The evolution of the germline has been studied for many decades. Although the pathway of germ cell primordial migration and the kinetic evolution of the gonocytes are well known, their genetic and cellular controls are poorly understood. Recently, a genetic approach using gene knockout and a cellular investigation using several germ cell culture models has allowed a better understanding of the ...
متن کاملI-18: Avian Chimeras and Germ Cell Migration
Background: In avian species, the germ line stem cell population arises outside of the embryonic gonad and proceeds on a circuitous migration to the germinal epithelium. Specifically, in the avian embryo, the process of germ line stem cell migration proceeds through a series of active and passive migratory phases. The germline stem cells or primordial germ cells (PGCs) located in the epiblast o...
متن کاملThe Correlation between Cell Phone over Use and Aggression
Introduction: Today concerns about the somatic and mental-emotional effects of exposure to electromagnetic waves have been raised. Although early thermal effects can not be attributed to these waves, It is necessary to investigate the long-term and side effects of these waves. One of the devices that has the most connection with electromagnetic waves is cell phones. In the pres...
متن کاملBehavioral Entropy of a Cellular Phone User
The increase of advanced service offered by cellular networks draws lots of interest from researchers to study the networks and phone user behavior. With the evolution of Voice over IP, cellular phone usage is expected to increase exponentially. In this paper, we analyze the behavior of cellular phone users and identify behavior signatures based on their calling patterns. We quantify and infer ...
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ژورنال
عنوان ژورنال: Journal of Human Reproductive Sciences
سال: 2010
ISSN: 0974-1208
DOI: 10.4103/0974-1208.63126