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The molecular components ensuring the strict exopeptidase action of aminopeptidase N (APN) and related zinc aminopeptidases of the M1 family have not yet been clearly established. The specific(More)
The ultimobranchial (UB) glands of the common toad Bufo bufo consist of several cellular masses containing two quite different cell types which line a central lumen filled with amorphous material.(More)