Protocols for the diagnosic verification of lymph node toxoplasmosis.

The protocol we have fixed for the diagnosis of lymphonodal toxoplasmosis includes a precise succession of tests: 1) specific repeated serological tests (I.H.A.T:, I.F.A.T., IgM-I.F.A.T. on total serum and on pure IgM fraction); 2) lymphonodal biopsy for histological examination and biological test (isolation procedure in mouse). We have evaluated the effectiveness of our protocol in 20 cases that we observed during 1980.