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This study found that flumethasone administration in Merino wethers led to variations in wool shedding and initial reductions in wool growth, with full recovery generally observed within 60 days post-treatment.

This study found that ectopic expression of FGF5s in transgenic Chinese Merino sheep increased wool length and greasy fleece weight compared to non-transgenic controls.

This study found that manipulating maternal cortisol levels during pregnancy altered Merino sheep wool characteristics, increasing fibre length and reducing crimp frequency in the offspring.

This study found that concurrent administration of cycloleucine with ethionine prevented the weakening of wool fibers in sheep, whereas reduced glutathione did not have the same effect.

This study found that ethionine significantly inhibited wool growth in sheep, with L- and D-isomers being equally effective, but did not cause hair loss in sucking mice or rats.

No clear conclusion available.

This study reports that lower levels of N-myc mRNA are observed when hair growth ceases in certain phases in mice, and attempts to create transgenic mice for further investigation resulted in high embryonic mortality.

In this study, topical application of keratin extract from wool promoted hair growth in mice by reducing the time for initiation and completion of growth phases and improving hair quality.

This study found that infused mouse epidermal growth factor induced wool follicle involution through a quasi-physiological process similar to catagen and a separate pathological action, resulting in fleece 'break' or shedding.

Wool follicles can grow in a lab with the right nutrients and conditions.

In this study, researchers identified a number of differentially expressed genes that may influence wool growth in Aohan fine wool sheep, offering insight into the genetic regulation of wool quality and yield.

This study found that crossbred lambs fed liquid diets with reconstituted cow's milk initially grew wool without crimp, with crimp resuming two weeks post-weaning.

This study found thousands of differentially expressed genes and proteins that may be associated with wool growth, suggesting potential gene families involved in hair growth regulation.

This study found that intradermal spermidine injections stimulated cell proliferation and increased fibre length growth rate in wool follicles of Merino lambs, without significantly affecting fibre diameter.

In this study, researchers found that circulating exosomes from different sheep breeds can significantly alter hair growth in mice, with the source of exosomes influencing hair follicle size and hair diameter, as well as expression of specific hair growth and melanin synthesis markers.

This study found that manipulating prolactin levels in New Zealand Wiltshire sheep induces wool follicle growth cycles, revealing gene expression changes that suggest roles for specific genes in follicle function.

This study found that a serum-free culture system supported hair growth from follicles responsive to calcium, glucose, and amino acids, with insulin enhancing the growth, while other factors had no effect.

This study investigated the impact of circulating exosomes from Xinji fine-wool and small-tailed Han sheep on hair growth in mice, finding that these exosomes influenced hair follicle development and melanin synthesis, with differences noted in hair follicle and hair diameters between different exosome treatments.

This study found that twice-daily intradermal injections of mouse epidermal growth factor in Merino sheep resulted in dose-dependent changes in wool follicles and fibres, including induction of catagen and subsequent regeneration.

This study suggests that melatonin may enhance wool growth in cashmere goats by activating sulfur metabolism genes and high-sulfur protein genes, which are crucial for providing sulfur-containing amino acids needed for wool quality.

This study identified genomic regions and genes associated with wool, live weight, body condition, and reproduction traits in Uruguayan Merino sheep, highlighting potential genetic factors influencing these characteristics.

In this study, researchers found that circulating exosomes isolated from the plasma of Xinji fine-wool and small-tailed Han sheep influenced hair growth characteristics in mice, altering follicle and hair shaft diameters, and affecting hair follicle development and melanin synthesis.

In this study, researchers used the CRISPR/Cas9 system to edit the FGF5 gene in Dorper sheep, observing increased density and finer wool, along with changes in cortisol levels and antioxidant enzyme activity linked to hair follicle development.

In this study, biotin supplementation was found to significantly increase wool follicle viability and metabolic activity in vitro, with the highest effects observed at 0.5 mg L⁻¹ concentration.

This review explores the biology of wool follicles and suggests their potential use as research models in modern biology, but it reports no new findings.

Gene expression in wool follicles changes with growth cycles, offering insights into wool and human hair growth.

This study found that CRISPR/Cas9-induced loss-of-function mutations in the FGF5 gene significantly increased wool length and yield in genetically modified Chinese Merino sheep compared to wild-type controls.