trypanosoma congolense haptoglobin-haemoglobin receptor (top and bottom) in complex with haemoglobin

3d rendering biochemistry biology cartoon chemistry color congolense disease erythrocyte gaussian surface graphic haptoglobinhaemoglobin health helix heme hemoglobin human infection interaction isolated medicine microbiology model molecule parasite pathogen protein quaternary receptor research science secondary shape structure tertiary trypanosoma white background