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Sertoli Cell Definition
Sertoli cells are found in the testes, where they provide significant support to developing sperm cells. Sertoli cells act as a sperm...
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Absence of Sperm Definition
The complete absence of any sperm within ejaculate is called azoospermia. If even a few sperm are found, this is considered oligospermia....
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Cell Structure Definitions
The human cellular structure is a complex system of metabolic reaction pathways, protein synthesis and a membrane that protects and wraps it....
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How Do I Define a Nurse Cell?
A nurse cell can have many different meanings and functions. They generally work to provide nutrients and nourishment to a developing cell...
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What Is Required for Sperm Production?
There are certain requirements the male body must meet in order to produce sperm. The male reproductive organs are located outside the...
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Definition of Cell Differentiation
Cell differentiation is the final phase in a process of cell development--cell specialization. The initial stage, the totipotent stage--in which the cell...
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Components of Sperm
All human beings began from the combination of an egg and a sperm cell. As gametes, sperm have a design unlike other...
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Receptor Cell Definition
A receptor cell reacts to sensations or stimulus in its environment. For example, receptors cells in the mouth may yield a burning...
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The Definition of ICSI
Intracytoplasmic sperm injection, or ICSI, is a form of fertility treatment used when a couple has trouble conceiving. The treatment involves injecting...
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Mesangial Cell Definition
Mesangial cells are important components of the glomerulus, a capillary tuft in the kidneys that begins the process of filtering the blood....
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The Similarities Between a Sperm and an Ovum
The human reproductive system is a complex network of cells, ducts, tubes and small organs. While the male and female have different...
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Definition of the Reproductive System
Life begins when a single egg and a single sperm combine. From the first day of conception, a genetic plan was in...
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What Is the Meaning of Sterility?
So you've been trying to have a baby for more than a year now, and you have not gotten the results you...
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How Do You Tell the Gender of a Red Tail Boa?
There are a few physical differences between male and female red tailed boa constrictors, but the significant attribute used to specify their...
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How to Explain Cell Reproduction
The cell is the basis for all life on Earth. All living things are composed of a series of cells, and a...
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What is the Definition of Target Cell?
A target cell is an abnormal erythrocyte affected by a medical disorder, which causes a central collection of hemoglobin within the cell,...
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Poor Embryonic Morphology Due to Sperm
Semen tests that indicate the presence of abnormal sperm are not uncommon and not necessarily bad, according to Dr. Todd Nippoldt of...
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Osteoprogenitor Cell Definition
While most active during bone growth, osteoprogenitor cells reactivate to repair bone fractures in adults and may become osteoblast cells during bone...
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How to Increase Sperm Count
Trying to conceive? Learning how to increase sperm count may be the key to unlocking the doorway to fertility. Sperm has been...