The absence of a protein fraction in "antibody resistant" Trypanosoma brucei.
D000906:Antibodies; D014644:Genetic Variation; D008970:Molecular Weight; D011506:Proteins / Q000032:analysis*; D014345:Trypanosoma / Q000032:analysis*; D014352:Trypanosomiasis / Q000276:immunology
D000906:Antibodies; D011506:Proteins