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Definition of Phytochrome
1. [n -S]
Medical Definition of Phytochrome
1. Plant pigment protein that absorbs red light and then initiates physiological responses governing light sensitive processes such as germination, growth and flowering. Exists in two forms, Pr and Pfr, that are interconverted by light. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)
Lexicographical Neighbors of Phytochrome
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