@misc{indiciaefdd130494017, title = {Immunization against protozoal diseases.}, author = {R A Neal and P C Garnham and S Cohen}, year = {1969}, doi = {10.1093/oxfordjournals.bmb.a070692}, url = {https://pubmed.ncbi.nlm.nih.gov/4918534/}, note = {Source identifier: 4918534} }