Glycoprofiles of the analysed PrPres. Glycoprofiles of the 39 resistant prion proteins (PrPres), obtained with antibody 94B4. The PrP possesses two, one or no carbohydrates attached. These three forms are found in various proportions in a given animal. Colours refer to the percentage of the diglycosylated form. The average glycoprofiles (with standard deviations) obtained with 94B4 for a reference isolate of H-type and L-type are indicated (HC and L, showing lower diglycosylated percentage, <50% for L-type, 3 replicates). HB represents the H-type glycoprofile using a group B antibody (Sha31), not allowing a clear discrimination. The three-arrow symbol is to assist the reader in finding the direction of each point to the different axes.