chromoblast

Noun

chromoblast (plural chromoblasts)

1. A precursor cell for chromaffin cells.
   • Possibly more than one type of chromoblast precursor is present in the adrenal primordium[.] TH levels are lower in chromoblasts that have migrated into the adrenal primordium and that are destined to become future neurones or NA cells than in future A cells[.] [figure legend]1999 October, K. Langley, N. J. Grant, “Molecular markers of sympathoadrenal cells”, in Cell and Tissue Research, volume 298, Springer-Verlag, →DOI, page 189
   • During embryogenesis, chromoblasts destined to become either adrenaline- or noradrenaline-secreting cells migrate in small homotypic groups independently into the gland along unmyelinated nerve fibres with the consequence that the two chromaffin cell phenotypes have different innervation and thus...2006 January, E. Crivellato, D. Guidolin, B. Nico, G.G. Nussdorfer, D. Ribatti, “Fine ultrastructure of chromaffin granules in rat adrenal medulla indicative of a vesicle-mediated secretory process”...

   Synonyms:

   pheochromoblast

2. A hypothesized cell, arising from the neural crest, that serves as a common progenitor cell for pigment cells, especially in some fishes and amphibians.
   • The morphological changes are accompanied by the establishment of a well-differentiated dorso-ventral pigmentation pattern. In the ocular side, stem chromoblasts differentiate into adult chromatophores (mainly melanophores, xanthophores and iridophores) and larval chromatophores progressively...2019 September 20, Patricia I. S. Pinto, Cláudia C. Guerreiro, Rita A. Costa, et al., “Understanding pseudo-albinism in sole (Solea senegalensis): a transcriptomics and metagenomics approach”, in...
   • Similar to other vertebrates, fish pigment cells are developed and differentiated from neural crest cells during early embryonic development [4]. Neural crest cells are first developed into chromoblasts and then differentiated into chromophores.2021 February 20, Bo-Tian Yang, Bin Wen, Yu Ji, et al., “Comparative metabolomics analysis of pigmentary and structural coloration in discus fish (Symphysodon haraldi)”, in Journal of Proteomics...

   Synonyms:

   chromatoblast