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This chapter reviews common dermatoses in small animals and offers bulleted lists as a preliminary tool for formulating differential diagnoses, but reports no new clinical findings.

This study found that upper-bulge epidermal stem cells in mouse hair follicles are specialized for nerve interactions, crucial for forming tactile sensory units, and influence touch responses via EGFL6 and αv integrin pathways.

This study demonstrates that Sox2-positive dermal papilla cells specify particular hair follicle types by showing heterogeneity in gene expression and pathway activation in these cells.

This study suggests that trichoscopy with a handheld dermatoscope may help differentiate temporal triangular alopecia from other localized alopecia by identifying specific hair features.

One type of progenitor cell can maintain normal skin in mice.

This study identified a new 65 kD and 48 kD keratin pair expressed in specific mouse epithelial sites, suggesting a unique evolutionary branch of hair-related keratins.

In this study, forced expression of the transcription factor cDermo-1 in chicken dermis led to the formation of ectopic feather buds and enhanced feather growth, demonstrating its role in initiating skin appendage development.

This study identified key genes and miRNAs involved in feather morphogenesis in Zhedong White geese, highlighting a negative correlation between FOXO3 and miR-144-y.

This study revealed that different coat patterns in cats and cheetahs are related to variations in the aminopeptidase Q gene and endothelin-3 expression, which affects pigment production.

This study identified specific gene expression profiles during the intestinal regeneration of sea cucumbers, highlighting potential novel genes and advancing the understanding of regenerative biology in echinoderms.

In this study, the researchers identified LHX2 as a specific marker for hair follicle placodes, differentiating them from eccrine sweat gland placodes through double immunofluorescence staining.

This review covers current knowledge of tricoscopy's applications in diagnosing and monitoring scalp and hair disorders but presents no new clinical results.

This study demonstrates that Tp63-expressing epithelial stem cells from non-skin tissues can respond to skin morphogenetic signals and contribute to the formation of hair follicles, sebaceous glands, and epidermis.

This review discusses the regeneration capabilities of various vertebrate tissues, focusing on the unique ability of certain species to regenerate teeth and lens, and reports no new results.

This study found that in human hair bulbs, telomerase is present mainly in the nuclei of cells undergoing proliferation, particularly in the matrix epithelium during the anagen phase, and sparsely in the outer root sheath during late catagen and telogen phases.

This study found that genetic ablation of Tet genes in mice led to changes in hair structure and keratin gene expression, indicating a role for Tet-mediated 5hmC DNA oxidation in hair follicle development and cycling.

This study suggests that different melanocyte subpopulations in hair follicles have varying patterns of apoptosis and survival during the catagen phase, which may inform models for modulating melanocyte behavior in vivo.

In this study of Danioninae species, researchers reported that the presence of breeding tubercles on the pectoral fins is conserved in certain species and linked to local androgen conversion, with steroid 5-α-reductase playing a crucial role in their development.

This study examined the relationship between sympathetic nerve endings and alopecia using direct and indirect immunofluorescence on human tissue samples, reporting no new clinical results.

This case report highlights a 34-year-old woman with traction alopecia, where diagnosis was clarified by the presence of peripilar keratin sheaths, a useful dermoscopic clue.

This study found that a cuticle keratin gene in sheep is a pseudogene due to gene duplication and mutations, lacking expression in vivo.

This review discusses three aspects of cell fate specification across Metazoa and reports no new experimental results, highlighting the formation of nematode equivalence groups, evolution of echinoderm skeletogenic mesoderm, and adult cell fate regulation.

This paper highlights advances in Developmental Dynamics, noting how epoa-deficient zebrafish can model Diamond-Blackfan anemia like disorders for drug screening, Alx4 mouse models offer insights into craniofacial development, and mTORC1 signaling is crucial for retinal development.

This study describes trichilemmal keratinization as a distinct process of hair follicle keratinization that occurs in specific areas of the outer root sheath, illustrated using electron microscopy on dog hair.

Transamidases are present in the epidermis but their exact role is unclear.

Telogen effluvium is a condition that causes temporary hair loss.

This study found that in spiny mice, the proximal side of ear wounds is crucial for regeneration, a process possibly linked to unique injury-induced immune responses compared to nonregenerative rodents.

This study demonstrated the usefulness of fully implantable loggers in measuring heart rate and sub-blubber temperature in captive harbour seals, with findings suggesting lower heart rates during molting and differences in temperature regulation between adults and sub-adults.

This chapter discusses stem cell activity in feather and hair follicles, emphasizing how stem cells maintain their population by cycling between quiescence and activation in specialized niches but reports no new results.