Extended Data Fig. 1: Rete ridges form perinatally in human and pig skin.
From: Rete ridges form via evolutionarily distinct mechanisms in mammalian skin
(a) Representative Herovici stains from human gestational week (GW) 12-13 (n = 1), 13-14 (n = 1), 16-17 (n = 7), 18-20 (n = 5) trunk skin. (b) Representative Herovici stains from porcine GW6-8 (n = 7), 9-11 (n = 6), 12-13 (n = 11), 14 (n = 3), 15-16 (n = 4). (c) Representative Herovici stains from porcine postnatal day (P) 1-2, 3-4, 10, 25, 1-month-old (1mo), 2mo, 6mo, 7mo, and > 1-year-old (1yo). (a-c) Scale bars indicate 100um. BB = basal bud/epithelial placode, HF = hair follicle, BV = blood vessel, Sw = sweat gland, Sb = sebaceous gland, PC = panniculus carnosus, APM = arrector pili muscle. Illustrations in a–c were created using BioRender. Thompson, S. (2026) https://BioRender.com/8rd8cz9.
