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| This glossary contains: 19186 medical terms |
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Trophectoderm
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Trophectoderm The outer layer of the developing blastocyst that will ultimately form the embryonic side of the placenta.
RELATED TERMS--------------------------------------
Blastocyst
The developmental stage of the fertilized ovum by the time it is ready to implant; formed from the morula and consists of an inner cell mass, an internal cavity, and an outer layer of cells (the trophoblast).
Embryonic
Undeveloped, related to the embryo.
SIMILAR TERMS--------------------------------------
Trophamine
Trophamine is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): amino acids.
Trophamine 10 per cent
Trophamine 10 per cent is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): amino acids.
Trophoblast
A granular protoplasmic body; a plastid, formed from , eventually surrounds the entire embryo; insert themselves between uterine epithelial cells, then spread along the epithelial surface of the basal lamina that underlies the endometrial epithelium to form a trophoplate.
Tropicacyl
Tropicacyl is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): tropicamide.
Tropical sprue
A condition of unknown cause. Abnormalities in the lining of the small intestine prevent the body from absorbing food normally.
Tropicamide
Tropicamide is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): tropicamide.
PREVIOUS AND NEXT TERMS--------------------------------------
Tissue culture
See culture.
Totipotent cells
Stem cells that have unlimited developmental capability. The totipotent cells of the very early embryo (an embryo prior to the blastocyst stage) have the capacity to differentiate into extraembryonic tissues, membranes, the embryo, and all postembryonic tissues and organs.
Transcription
Making an RNA copy from a gene or other DNA sequence. Transcription is the first step in gene expression.
Transformation
A genetic process resulting in a heritable alteration of the properties of a cell. In the case of cultured cells, transformation often refers to the acquisition of new properties, such as unlimited culture lifespan.
Translation
The process of forming a protein molecule from information contained in messenger RNA.
Trophectoderm
Tay-Sachs disease
A genetic disorder carried by an estimated one in 30 Eastern European Jews; babies born with Tay-Sachs lack an essential enzyme and die in early childhood. A preconception test can determine whether potential parents are carriers of the disease.
Teacher-to-child ratio
The number of caregivers per child in a group childcare setting. According to the National Association for the Education of Young Children, the lower the ratio, the better: A lower ratio means each child gets more attention and individual care.
Terbutaline
One of a family of medications called tocolytics, used to halt the contractions of preterm labor.
Testes
The pair of male glands, contained in the scrotum, that produce sperm.
Testicular torsion
Where the testicle twists inside the scrotum, usually because of an injury to the scrotum; can lead to infertility.
RELATED TERMS--------------------------------------
Blastocyst
The developmental stage of the fertilized ovum by the time it is ready to implant; formed from the morula and consists of an inner cell mass, an internal cavity, and an outer layer of cells (the trophoblast).
Embryonic
Undeveloped, related to the embryo.
SIMILAR TERMS--------------------------------------
Trophamine
Trophamine is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): amino acids.
Trophamine 10 per cent
Trophamine 10 per cent is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): amino acids.
Trophoblast
A granular protoplasmic body; a plastid, formed from , eventually surrounds the entire embryo; insert themselves between uterine epithelial cells, then spread along the epithelial surface of the basal lamina that underlies the endometrial epithelium to form a trophoplate.
Tropicacyl
Tropicacyl is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): tropicamide.
Tropical sprue
A condition of unknown cause. Abnormalities in the lining of the small intestine prevent the body from absorbing food normally.
Tropicamide
Tropicamide is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): tropicamide.
PREVIOUS AND NEXT TERMS--------------------------------------
Tissue culture
See culture.
Totipotent cells
Stem cells that have unlimited developmental capability. The totipotent cells of the very early embryo (an embryo prior to the blastocyst stage) have the capacity to differentiate into extraembryonic tissues, membranes, the embryo, and all postembryonic tissues and organs.
Transcription
Making an RNA copy from a gene or other DNA sequence. Transcription is the first step in gene expression.
Transformation
A genetic process resulting in a heritable alteration of the properties of a cell. In the case of cultured cells, transformation often refers to the acquisition of new properties, such as unlimited culture lifespan.
Translation
The process of forming a protein molecule from information contained in messenger RNA.
Trophectoderm
Tay-Sachs disease
A genetic disorder carried by an estimated one in 30 Eastern European Jews; babies born with Tay-Sachs lack an essential enzyme and die in early childhood. A preconception test can determine whether potential parents are carriers of the disease.
Teacher-to-child ratio
The number of caregivers per child in a group childcare setting. According to the National Association for the Education of Young Children, the lower the ratio, the better: A lower ratio means each child gets more attention and individual care.
Terbutaline
One of a family of medications called tocolytics, used to halt the contractions of preterm labor.
Testes
The pair of male glands, contained in the scrotum, that produce sperm.
Testicular torsion
Where the testicle twists inside the scrotum, usually because of an injury to the scrotum; can lead to infertility.
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This dictionary contains 19186 terms.
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