| SRT | sedimentation rate test; simple reaction time; sinus node recovery time; sitting root test; speech r... |
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| tcTOFA | time constrained time-of-flight absorbance |
| TD | the time required to double the number of cells in a given population; thermal death time |
| TDT | terminal deoxynucleotidyltransferase; thermal death time; tone decay test; tumor doubling time |
| TE | exhalation time; expiratory phase time |
| two-component plasma | <radiobiology> Refers to a plasma containing a cool thermal component and a population of high energy particles (such as from neutral beam injection) which are in the process of thermalising (slowing down). (09 Oct 1997) |
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| kern-plasma relation theory | A theory enunciated by Hertwig (1903) that a definite relation as to size normally exists in every cell between the mass of nuclear material and that of the protoplasm. Origin: Ger. Kern, kernel, nucleus (05 Mar 2000) |
| fresh frozen plasma | The fluid component of blood lacking the cells but containing all the necessary plasma proteins, used to restore the protein clotting factors in some individuals with clotting factor deficiencies. (27 Sep 1997) |