Of the 38 African trypanosomiasis ID5143 pathway genes (S9A Table) nine could not be detected including Kng1 and 2 encoding the kallikrein-kinin hormonal cascade in addition to Il12b and the E-selectin gene Sele while the levels Il12a, Apoa1, Fasl and Plcb2 message were subthreshold. This evidence concerns the gene IL12A and human African trypanosomiasis.