in this report , using the high resolution lectin-gold approach with helix pomatia lectin ( hpl ) -colloidal gold complex , we present cytochemical evidence to show that glycoconjugates containing terminal n-acetyl-d-galactosamine residues are absent from the zona pellucida of ovarian oocytes but are synthesized and secreted by the nonciliated secretory cells of the oviduct and later become associated with well-defined structural elements of the zona matrix of oocytes during passage through the oviduct .
C0043519
zona pellucida
C0029045
oocytes