15 citations,
January 1999 in “Reproduction Fertility and Development” Merino sheep have fewer wool follicles at birth than before birth.
1 citations,
January 2012 in “International journal of trichology” Sheep hair follicle cells can grow a lot but need the dermal papilla to do so.
20 citations,
February 1994 in “In vitro cellular & developmental biology. Animal” Wool follicles can grow in a lab with the right nutrients and conditions.
44 citations,
December 1991 in “Annals of the New York Academy of Sciences” EGF and FGF help hair growth by affecting cell differentiation and fiber growth.
December 2022 in “Deleted Journal” Sheep wool keratin solution safely and effectively promotes hair growth.
1 citations,
April 2021 in “IntechOpen eBooks” The PCR technique can identify genetic differences in a wool-related gene among different sheep breeds, which may help improve wool and pelt quality.
10 citations,
November 2021 in “International journal of molecular sciences” Sheep and goat hair fibers are complex due to keratin-associated proteins, which are important for fiber properties and growth.
94 citations,
February 1994 in “The journal of investigative dermatology/Journal of investigative dermatology” EGF makes hair follicles grow longer but stops hair production.
25 citations,
May 1994 in “Journal of Investigative Dermatology” Researchers found a new gene, hacl-1, that is active in mouse hair follicles during hair growth and may be important for hair biology.
48 citations,
July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair growth is controlled by specific gene clusters and proteins, and cysteine affects hair gene expression in sheep.
62 citations,
July 1993 in “Journal of Investigative Dermatology” Hair growth is influenced by interactions between skin layers, growth factors, and hormones, but the exact mechanisms are not fully understood.
January 2012 in “Methods in pharmacology and toxicology” Hair follicle culture helps study hair growth but has limitations in modeling the full hair cycle.
90 citations,
October 1996 in “Dermatologic Clinics” Growth factors are crucial for hair development and could help treat hair diseases.
12 citations,
February 1998 in “Gene” The B2 genes are crucial for hair growth in rats.
January 1999 in “Birkhäuser Basel eBooks” Metallothionein likely helps in cell growth and development in wool follicles of fetal sheep.
23 citations,
May 2020 in “Cell Death and Disease” Blocking the FGF5 gene in sheep leads to more fine wool and active hair follicles due to changes in certain cell signaling pathways.
January 1963 in “Stain technology” Ziehl-Neelsen's stain helps identify different parts of hair in sheep and goats.
IRS-specific genes in Tan sheep hair follicles peak at birth and may affect wool crimp.
10 citations,
December 2021 in “Frontiers in cell and developmental biology” The research identified genes that explain why some sheep have curly wool and others have straight wool.
FGF9 helps hair follicles grow in small-tailed Han sheep by affecting cell growth and certain signaling pathways.
30 citations,
July 2010 in “Experimental Dermatology” Polyamines are important for hair growth, but more research is needed to understand their functions and treatment potential.
90 citations,
January 1979 in “International review of cytology” Wool follicles are complex, involving interactions between different cell types and structures.
3 citations,
April 2002 in “Animal Science” Spermidine injections increased wool growth rate in lambs without changing fibre thickness.
Editing the FGF5 gene in sheep increases fine wool growth.
October 2023 in “International journal of molecular sciences” Key proteins and pathways regulate wool fiber diameter in Alpine Merino sheep.
25 citations,
April 2017 in “PloS one” Certain genetic variations in the FST gene are linked to better wool quality in Chinese Merino sheep.
Variant G of the KRTAP20-1 gene improves wool curliness in Chinese Tan sheep.
1 citations,
November 1981 in “PubMed” No clear conclusion available.
January 2024 in “International journal of molecular sciences” Hoxc13 gene affects wool length in Gansu alpine fine-wool sheep.
1 citations,
December 2022 in “Animals” Blocking miR-27a increases sheep hair follicle stem cell growth and decreases cell death, which could help improve wool quality and treat hair loss.