text: Because peanut agglutinin specifically binds a particular carbohydrate sequence it finds use in a range of methods for cell biology and biochemistry. For example in PNA-affinity chromatography the binding specificity of peanut agglutinin is used to isolate glycosylated molecules which have the sugar sequence Gal-β(1-3)-GalNAc. Peanut agglutinin activity is inhibited by lactose and galactose which compete for the binding site.
  Other uses include:
  * Potent anti-T cell activity.
  * Distinguishing between human lymphocyte subsets.
  * Identification of cone cell inner and outer segments and to a lesser extent rod cell inner segments in the mammalian retina.
  * Tumour tissue determination for transitional mucosa malignancies.
  * Identification of mammalian-infective metacyclic promastigote Leishmania major parasites from other life cycle forms also found in the sandfly host.
  * Identification of the outer acrosome membrane in sperm, indicating acrosome integrity.