The presence of these proteins supports the hypothesis that parasite-derived cargo can be secreted into the circulatory system and may contribute to immune evasion, host cell modulation, or even serve as diagnostic biomarkers, such as the ABC transporter protein TA19175 and uncharacterized proteins (TA15710 and TA21045), which were exclusively detected in post-infection sera. The gene discussed is ABCG2; the disease is infection.