Localization of wheat germ agglutinin receptor sites on yeast cells by scanning electron microscopy.

WGA receptor sites on the surface of Saccharomyces cerevisiae cells pretreated with an alpha-mannanase were localized by gold granules labelled with WGA. The receptor sites were found on the bud scars, the mother cell-bud junction (chitin) and the bud, but not on the mother cell.