Abstract
SUMMARYThe silver stainability of the centriolar adjunct from grasshopper spermatids was analysed after blocking ‐SH groups with heavy cations (lead, mercury), or following the conversion of ‐SH and ‐S‐S groups into sulphonates (permanganate oxidation). These treatments produced the loss of silver affinity in the centriolar adjunct. Likewise, the selective fluorescence of this structure by mercuridibromfluorescein was abolished after these treatments. Our results indicate that ‐SH groups are involved in staining reactions of the centriolar adjunct by silver and mercuridibromfluorescein.
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