1. 21 In-vitro production of toxoplasma-specific antibodies could improve the diagnosis of toxoplasmic encephalitis in HIV-1-infected patients.

2. There are 20 eleven-letter words containing A, I, M, O, S and X: Amphioxuses AXIOMATISED AXIOMATISES TOXOPLASMIC XERODERMIAS XEROSTOMIAS

3. Serum antibody concentration does not predict toxoplasmic encephalitis and IgM and IgA antibodies to T, gondii are rarely found.

4. 2 Serum antibody concentration does not predict toxoplasmic encephalitis and IgM and IgA antibodies to T, gondii are rarely found.