| APRP | acidic proline-rich protein; acute phase reactant protein |
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| ARP | absolute refractory period; American Registry of Pathologists; anticipated recovery path; apolipopro... |
| ASPS | advanced sleep phase syndrome |
| CPIR | cephalic-phase insulin release |
| CYCLOPS | cyclically ordered phase sequence |
| soil phase | A subdivision of a soil series having features (for example, slope, surface texture, thickness and stoniness) that affect the use and management of the soil, but which do not vary sufficiently to differentiate it as a separate series. (09 Oct 1997) |
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| solid phase immunoassay | Immunoassay in which the antigen or serum is bound to a solid surface, such as a microplate wall or the sides of a tube, the other reactants being free in solution. (05 Mar 2000) |
| S phase | <cell biology> The phase of the cell cycle during which DNA replication takes place. (18 Nov 1997) |
| stationary phase | The plateau of the growth curve after log growth in a culture, duringwhich cellnumber remains constant. New cells are produced at the same rate as oldercells die. (09 Oct 1997) |
| negative phase | The period during which the opsonic index is lowered following the injection of a vaccine. (05 Mar 2000) |
| death phase | <cell culture> The final growth phase in a culture, during which nutrients have been depleted and cell number decreases. (09 Oct 1997) |
| supernormal recovery phase | A brief period during the recovery of cardiac muscle following excitation when diseased muscle is more (i.e., less abnormally) excitable; corresponds to the end of the T wave in the ECG. (05 Mar 2000) |
| synaptic phase | <cell biology> The specific pairing of the chromatids of homologous chromosomes during prophase I of meiosis. It allows crossing over to take place. (18 Nov 1997) |
| discontinuous phase | The particles contained in a colloid solution. Synonym: discontinuous phase, dispersed phase. (05 Mar 2000) |
| dispersed phase | The particles contained in a colloid solution. Synonym: discontinuous phase, dispersed phase. (05 Mar 2000) |
| dispersion phase | The medium or fluid in which a disperse is suspended. Synonym: continuous phase, dispersion medium, dispersion phase, external medium. (05 Mar 2000) |
| in phase | Moving in the same direction at the same time; a possible characteristic of two simultaneous oscillations of similar frequency. (05 Mar 2000) |
| internal phase | The particles contained in a colloid solution. Synonym: discontinuous phase, dispersed phase. (05 Mar 2000) |
| oedipal phase | In psychoanalysis, a stage in the psychosexual development of the child, characterised by erotic attachment to the parent of the opposite sex, repressed because of fear of the parent of the same sex; usually occurring between the ages of 3 and 6 years. Synonym: oedipal period. (05 Mar 2000) |
| oral phase | In psychoanalytic personality theory, the earliest stage in psychosexual development, lasting through the first 18 months of life, during which the oral zone is the centre of the infant's needs, expression, gratification, and pleasurable erotic experiences; has a strong influence on the organization and development of the child's psyche. (05 Mar 2000) |