## Abstract The development of __Xenopus laevis__ cement gland ectoderm cultured as epidermal vesicles from neurula stage embryos is described. The life cycle explanted gland cells closely parallels that seen in intact animals. The cells increase in height, extrude their secretory mucin and most of
Proliferation in vitro of melanophores fromXenopus laevis
β Scribed by Fukuzawa, T. ;Ide, H.
- Publisher
- John Wiley and Sons
- Year
- 1983
- Tongue
- English
- Weight
- 533 KB
- Volume
- 226
- Category
- Article
- ISSN
- 0022-104X
No coin nor oath required. For personal study only.
β¦ Synopsis
Melanophores of wild-type and periodic albino mutants of Xenopus laevis were successfully cultured in vitro. They proliferated in the presence of alpha-melanocyte-stimulating hormone (alpha-MSH or cyclic adenosine monophosphate (cAMP) at a doubling time of 8-10 days. These proliferating melanophores retained their phenotypes, ability to synthesize melanin, and melanin-dispersing response to MSH stimulation. Neither depigmentation nor selective cell death of periodic albino melanophores was observed for at least 4 months during the cultivation.
π SIMILAR VOLUMES
## Abstract Spermatogenic cells were obtained from __Xenopus laevis__ testes by collagenase dissociation and subsequently separated into two fractions by density gradient centrifugation in Metrizamide and by unit gravity sedimentation in bovine serum albumin gradients. One fraction was highly enric
## Abstract The common goldfish depigments its larval choroidal melanophores as well as the skin melanophores for about two to three months following hatching. Thereafter it begins to show a characteristic xanthic coloration. This depigmentation is under the control of depigmentation genes __Dp__~1
## THXRTEEN FIGURES Changes in dispersion o r concentration of pigment within melanophores of vertebrates have been studied chiefly by the use of tlie microscope, and as a scale of measurement the melanophore index of Slome and Hogben ('28) has been adopted widely. This system has the disadvantage
## Abstract A perfusion technique is described for the study of melanosome response in ventral tailfin melanophores of __Xenopus laevis__ tadpoles. The melanosomes remain aggregated (punctate melanophores) in Ringer's. Theophylline (15 mM) and caffeine (30 mM) cause a reversible dispersion (stellat