Definition of Grex
1. a group of plants that has arisen from the same hybrid parent [n -S]
Medical Definition of Grex
1.
The multicellular aggregate formed by cellular slime moulds (Acrasidae): the slug like grex migrates, showing positive phototaxis and negative gravitaxis, until culmination (the formation of a fruiting body) takes place.
Coordination of the activities of the hundreds of thousands of individual amoebae that compose the grex may involve pulses of cyclic AMP in Dictyostelium discoideum, a species in which cAMP is the chemotactic factor for aggregation.
This entry appears with permission from the Dictionary of Cell and Molecular Biology
(11 Mar 2008)
Lexicographical Neighbors of Grex
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