The structure in solution of the second Ig-module fragment of residues 117–208 of NCAM has been determined. Like the first Ig-module of residues 20–116, it belongs to the I set of the immunogloblin ...
The evolutionary events that allowed the rapid occurrence of metazoa are still enigmatic. The presumably oldest metazoan fossils are microscopic and occur just above 635 Ma, at the beginning of the ...
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