overstain

overstain

(ˌəʊvəˈsteɪn)
vb (tr)
to stain too much
References in periodicals archive ?
cuboideum as an "overstain" for blue-stained pine (Robinson et al.
(11) Indeed, the different staining pattern in gastric compared with breast carcinoma, the lower volume of cases seen in general community pathology laboratories, and the reliance of biopsies that frequently overstain with IHC, compared with resections, are likely to compound the accuracy of HER2/neu testing in the gastric setting.
A new formula for a half-oxidized hematoxylin solution that neither overstains nor requires differentiation.