Smad4 is crucial for muscle repair, especially in aging, by promoting cell growth over differentiation.
15 citations
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January 1999 in “Reproduction Fertility and Development” Merino sheep have fewer wool follicles at birth than before birth.
Curly wool has more orthocortex than straight wool.
5 citations
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January 2012 in “International journal of trichology” A 2-year-old boy had no hair and unusual organ placement, and it's unclear if it's genetic or coincidental.
November 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” Scientists made a mouse that shows how a specific protein in the skin changes and affects hair growth and shape.
2 citations
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August 2023 in “Journal of Endocrinological Investigation” Excess maternal androgens can cause heart problems in offspring.
July 2023 in “Turkish journal of veterinary research” Wild boar bristles in Balıkesir vary in length and thickness but are unsuitable for species separation.
1 citations
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October 2025 in “Scientific Reports” Mandarin duck sail feathers change with seasons due to hormones and genetic regulation.
January 2003 in “Zhonghua shaoshang zazhi” Murine fetal epidermal stem cells can help regenerate hair follicles.
January 2024 in “Skin Appendage Disorders”