microfilarial sheath

mi·cro·fi·lar·i·al sheath

the membrane surrounding the embryos of certain blood-borne microfilariae, such as Wuchereria, Brugia, and Loa of humans; thought to be derived from the vitelline membrane.
References in periodicals archive ?
Most importantly anti-microfilarial immunity in human lymphatic filariasis though believed to operate through antibodies to the microfilarial sheath, the presence of anti-sheath antibodies in hydrocele fluid has not yet been studied.
Protective immunity in human Bancroftian filariasis: Inverse relationship between antibodies to microfilarial sheath and circulating filarial antigens.
Immunoepidemiology of Wuchereria bancrofti infection in two east African communities: Antibodies to the microfilarial sheath and their role in regulating microfilaraemia.