| Plasmodromata | A former taxonomic category that included ameboid and flagellate Protozoa in which the nucleus is not separated into reproductive (micro-) and vegetative (macro-) portions; equivalent to the present phylum Sarcomastigophora. Origin: plasmo-+ G. Dromos, a running, a course (05 Mar 2000) |
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| plasmogamy | Union of two or more cells with preservation of the individual nuclei; formation of a plasmodium. Synonym: plasmatogamy, plastogamy. Origin: plasmo-+ G. Gamos, marriage (05 Mar 2000) |
| plasmogen | <biology> The important living portion of protoplasm, considered a chemical substance of the highest elaboration. Germ plasm and idioplasm are forms of plasmogen. Origin: Plasma + -gen. Source: Websters Dictionary (01 Mar 1998) |
| plasmoid | <physics> An isolated plasma which holds together for a duration much longer than the collision times for the constituent particles. (09 Oct 1997) |
| plasmokinin | A coagulation (clotting) factor. Classic haemophilia (haemophilia A) is due to a congenital deficiency in the amount (or activity) of factor VIII. Factor VIII is also known as antihemophiliac factor (AHF) or antihemophiliac globulin (AHG). The gene for factor VIII (that for classic haemophilia) is on the X chromosome so females can be silent carriers without symptoms and males can be haemophiliacs. (12 Dec 1998) |
| plasmolemma | <cell biology> The structure enveloping a cell, enclosing the cytoplasm and forming a selective permeability barrier. It consists of lipids, proteins and some carbohydrates, the lipids thought to form a bilayer in which integral proteins are embedded to varying degrees. Synonym: plasma membrane. (26 Mar 1998) |
| plasmolysis | <plant biology> Process by which the plant cell protoplast shrinks, so that the plasma membrane becomes partly detached from the wall. Occurs in solutions of high osmotic potential, due to water moving out of the protoplast by osmosis. (31 Dec 1997) |
| plasmolytic | Relating to plasmolysis. (05 Mar 2000) |
| plasmolyze | To cause the dissolution of the cellular constituents. (05 Mar 2000) |
| plasmon | The total of the extrachromosomal genetic properties of the eukaryotic cell cytoplasm. Synonym: plasmotype. Origin: cytoplasm + -on (05 Mar 2000) |
| plasmorrhexis | The splitting open of a cell from the pressure of the protoplasm. (05 Mar 2000) |
| plasmoschisis | The splitting of protoplasm into fragments. Origin: plasmo-+ G. Schisis, a cleaving (05 Mar 2000) |
| plasmosin | A highly viscous substance in cytoplasm containing discrete fibres of considerable length; a nucleoprotein regarded as the structural foundation of the cell. (05 Mar 2000) |
| plasmotomy | A form of mitosis in multinuclear protozoan cells in which the cytoplasm divides into two or more masses, later reproducing, in some cases by sporulation. Origin: plasmo-+ G. Tome, incision (05 Mar 2000) |
| plasmotropic | Pertaining to or manifesting plasmotropism. (05 Mar 2000) |
| plasmodesmata |
Cell-wall channels that allow symplastic connections between plant cells.
Ãâó: www.nature.com/nrg/journal/v4/n3/glossary/nrg1002_...
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| plasma cell |
An antibody-secreting B-lymphocyte.
Ãâó: www.genpromag.com/Glossary~LETTER~P.html
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| plasma membrane |
The lipid bilayer membrane that forms the boundary of a cell.
Ãâó: www.genpromag.com/Glossary~LETTER~P.html
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| plasmacytoma |
A plasma cell tumor.
Ãâó: www.genpromag.com/Glossary~LETTER~P.html
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| plasmid |
A DNA element that is able to replicate independently. Elements of bacterial plasmids are utilized in vectors.
Ãâó: www.genpromag.com/Glossary~LETTER~P.html
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