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This process uses a non-germ-free mother which is sacrificed and sterilized before the pups' birth. After the cesarean birth, the pups must then be transferred to a sterile incubator with a germ-free mother for feeding and growth. [9] [10] These methods are only required for the generation of a germ-free mouse line. Once a line is generated ...
Germ (microorganism), an informal word for a pathogen; Germ cell, cell that gives rise to the gametes of an organism that reproduces sexually; Germ layer, a primary layer of cells that forms during embryonic development; Cereal germ, the reproductive part of a cereal grain; Tooth germ, an aggregation of cells that eventually forms a tooth
They differentiate in the gonads from primordial germ cells into gametogonia, which develop into gametocytes, which develop into the final gametes. [1] This process is known as gametogenesis. Germ cells pass on genetic material through the process of sexual reproduction. This includes fertilization, recombination and meiosis. These processes ...
A spermatogonium (plural: spermatogonia) is an undifferentiated male germ cell. Spermatogonia undergo spermatogenesis to form mature spermatozoa in the seminiferous tubules of the testicles . There are three subtypes of spermatogonia in humans:
The germ plasm effectively turns off gene expression to render the genome of the cell inert. Cells expressing germ plasm become primordial germ cells (PGCs) which will then give rise to the gametes. The germ line development in mammals, on the other hand, occurs by induction and not by an endogenous germ plasm (see reference 6.).
A germ cell is any cell that gives rise to the gametes of an organism that reproduces sexually. In many animals, the germ cells originate in the primitive streak and migrate via the gut of an embryo to the developing gonads. There, they undergo meiosis, followed by cellular differentiation into mature gametes, either eggs or sperm.
This is a list of cells in humans derived from the three embryonic germ layers – ectoderm, mesoderm, and endoderm. Cells derived from ectoderm ... This page was ...
Germ plasm (German: Keimplasma) is a biological concept developed in the 19th century by the German biologist August Weismann. It states that heritable information is transmitted only by germ cells in the gonads (ovaries and testes), not by somatic cells .
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