Epitectin, the mucin-like glycoprotein defined by the monoclonal antibodies CA1, CA2 and CA3, has been examined by electron microscopy to determine its shape and size. It appears to be a single extended strand with a mean length of about 270 nm. The antibodies CA1 and CA2 appear to bind preferentially to a terminal site on the epitectin molecule.

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© 1986 by Company of Biologists
1986