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On the role of metal cations in cellular adhesion: Cation specificity

✍ Scribed by Armstrong, Peter B. ;Jones, Daniel P.

Publisher: John Wiley and Sons
Year: 1968
Tongue: English
Weight: 859 KB
Volume: 167
Category: Article
ISSN: 0022-104X
DOI: 10.1002/jez.1401670303

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✦ Synopsis

Of the four common alkaline earth cations, only Ca+ + is able to protect Rana pipiens embryos from dissociation of the epidermis into isolated cells by EDTA. Presumably this is because only Ca++ is able to satisfy the divalent cation requirement for cellular adhesion in this tissue. Although early stage embryos are completely dissociable by EDTA, the axial musculature, brain and spinal cord become resistant to dissociation by stage 17. Tetraphenyl boron is also effective in disaggregating amphibian embryo tissues.

All solutions made up in Ca+ + free Holtfreter's solution, pH 7.3 (Hamburger, '60).

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