Mitotically active zeta neoblasts and their post-mitotic descendants which undergo progressive differentiation and outward directed movement through the mesenchyme prior to incorporation into the epidermis, where terminal differentiation occurs. [ http://www.ncbi.nlm.nih.gov/pubmed/29674432 http://www.ncbi.nlm.nih.gov/pubmed/30282036 http://www.ncbi.nlm.nih.gov/pubmed/27606067 http://www.ncbi.nlm.nih.gov/pubmed/27150006 ]

Mitotically active zeta neoblasts and their post-mitotic descendants which undergo progressive differentiation and outward directed movement through the mesenchyme prior to incorporation into the epidermis, where terminal differentiation occurs. [ ]