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It's the linchpin of your entire experimental protocol

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[DOI] [PubMed] [Google Scholar] 150.Priddy LB, Chaudhuri O, Stevens HY, Krishnan L, Uhrig BA, Willett NJ, et al

And without the enzyme 5-alpha reductase, DHT cannot form (at least at relatively high quantities)

For context on what those signs look like and how GH deficiency is evaluated, the article on 7 signs your growth hormone levels may be low covers the clinical picture

Additionally, the viability of pollen is not affected by the temperatures ranging between 25 and 37C and does not vary among varieties of plants, including RR and conventional varieties (78)