TY - RPRT TI - Trypanosoma congolense: interactions between trypanosomes expressing different metacyclic variable antigen types in vitro and in vivo. AU - C J Prain AU - C A Ross PY - 1988 DO - 10.1017/s0031182000058480 UR - https://pubmed.ncbi.nlm.nih.gov/3059264/ ID - 3059264 ER -