Tendler, Miriam, and Mauro Scapin. “The Presence of Schistosoma Mansoni Antigens in Solutions Used for Storing Adult Worms”. Revista Do Instituto De Medicina Tropical De São Paulo, vol. 21, no. 6, Dec. 1979, pp. 293-6, https://revistas.usp.br/rimtsp/article/view/197552.