@misc{indiciae363c2c908181, title = {A new toxoplasma antigen for complement fixation test.}, author = {E STEEN and E KASS}, year = {1951}, doi = {10.1111/j.1699-0463.1951.tb04999.x}, url = {https://pubmed.ncbi.nlm.nih.gov/14818812/}, note = {Source identifier: 14818812} }