For the colloquial term for a disease causing agent, or other various meanings, see Germ (disambiguation).
Gamete-producing cell
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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. Unlike animals, plants do not have germ cells designated in early development. Instead, germ cells can arise from somatic cells in the adult, such as the floral meristem of flowering plants.[1][2][3]
^Alberts B, Johnson A, Lewis J, Raff Mm Roberts K, Walter P (2002). Molecular biology of the cell. New York, Garland Science, 1463 p. ISBN 9780815335771.
A germcell is any cell that gives rise to the gametes of an organism that reproduces sexually. In many animals, the germcells originate in the primitive...
Germcell tumor (GCT) is a neoplasm derived from the primordial germcells. Germ-cell tumors can be cancerous or benign. Germcells normally occur inside...
haploid cell that fuses with another haploid cell during fertilization in organisms that reproduce sexually. Gametes are an organism's reproductive cells, also...
multicellular organism other than a gamete, germcell, gametocyte or undifferentiated stem cell. Somatic cells compose the body of an organism and divide...
germcell (PGC) migration is the process of distribution of primordial germcells throughout the embryo during embryogenesis. Primordial germcells are...
ovary is made up of three different cell types including epithelial cells, germcells, and stromal cells. When these cells become abnormal, they have the ability...
A germ layer is a primary layer of cells that forms during embryonic development. The three germ layers in vertebrates are particularly pronounced; however...
Germcell neoplasia in situ (GCNIS) represents the precursor lesion for many types of testicular germcell tumors. The term GCNIS was introduced with the...
disease, and previous history of testicular cancer. More than 95% are germcell tumors which are divided into seminomas and non-seminomas. Other types...
The germcell nest (germ-line cyst) forms in the ovaries during their development. The nest consists of multiple interconnected oogonia formed by incomplete...
effect is one-way: germcells produce somatic cells, and more germcells; the germcells are not affected by anything the somatic cells learn or any ability...
ovocyte is a female gametocyte or germcell involved in reproduction. In other words, it is an immature ovum, or egg cell. An oocyte is produced in a female...
testicular torsion, or hydrops fetalis. They are a type of germcell tumor (a tumor that begins in the cells that give rise to sperm or eggs). They are divided...
Sertoli cells shortly after birth and stimulates the production of factors derived from Sertoli cells that control the development of the testes and germ cells...
Look up germ in Wiktionary, the free dictionary. Germ or germs may refer to: Germ (microorganism), an informal word for a pathogen Germcell, cell that gives...
organisms by which germcells are formed, and it is likely an adaptation for removing DNA damages, especially double-strand breaks, from germ line DNA (see...
e.g., embryonic stem cells and iPSCs, to the incompletely or partially pluripotent cell that can form cells of all three germ layers but that may not...
Primary intratesticular malignancy can be divided into germcell tumors and non–germcell tumors. Germcell tumors are further categorized as either seminomas...
of these cells is typically a germcell and other cells may consist of a single tube cell which grows to form the pollen tube, sterile cells, and/or prothallial...
strict distinction between the "immortal" germcell lineages producing gametes and "disposable" somatic cells in animals (but not plants), in contrast...
complete. The process starts with the production of spermatogonia from germcell precursors. These divide and differentiate into spermatocytes, which undergo...
population of a multicellular organism's cells that develop into germcells. In other words, they are the cells that form gametes (eggs and sperm), which...
haploid number are equal; in humans, both are equal to 23. When a human germcell undergoes meiosis, the diploid 46 chromosome complement is split in half...
ovum is fertilized inside the female body. Human ova grow from primitive germcells that are embedded in the substance of the ovaries. Each of them divides...
are called Weismannists, a separation between a sterile somatic cell line and a germcell line evolved. However, Weismannist development is relatively rare...
detectable variation within germcells (cells that, when fully developed, become sperm and ova). Mutations in these cells are the only mutations that...
a special type of cell division of germcells in sexually-reproducing organisms that produces the gametes, the sperm or egg cells. It involves two rounds...
associated risk factors for testicular germcell tumor, the increase in risk of concurrent diagnosis of testicular germcell tumor, or testicular carcinoma-in-situ...
spermatozoa develop from germcells in the seminiferous tubules of the testicle. This process starts with the mitotic division of the stem cells located close to...