Fig. 1From: Expression of folate receptors alpha and beta in normal and cancerous gynecologic tissues: correlation of expression of the beta isoform with macrophage markersPartial sequences for the 4 isoforms of human folate receptor are depicted to show the 16 conserved cysteine residues (red highlighted) between all isoforms. FRA and FRB have 71Â % identity across their entire sequences. GPI-anchored FRA has 233 amino acids. The highlighted (blue) serine in the FRA sequence indicates the site of attachment of the GPI-anchorBack to article page