Toxoplasma gondii excreted/secreted antigens(ESA)are released during the host-cell adhesion and invasion and during the parasitism in parasitophorous vacuole.

• 弓形虫排泄/分泌抗原(ESA)是虫体在黏附、侵入宿主细胞及在纳虫泡中寄生过程中分泌、排泄的抗原物质。