DEVELOPMENT TIME OF NURSE CELLS AROUND MUSCLE LARVAE IN MICE DIAPHRAGMS OF 4 TRICHINELLA ISOLATES

Development time of nurse cells around muscle larvae in mice diaphragms for 4 Trichinella isolate was different, the earliest muscle nurse cells development (encapsulation) dates were at 16 days postinfection (d.p.i.) for swine isolate, at 18 d.p.i. for T.spiralis, at 20 d.p.i. for dog isolate and 22 d.p.i. for T.nativa. The interval at which 100% of the muscle larvae became encapsulated was not related to the time of appearance of the first encapsulated larvae, the 100% level of encapsulation occurred at 32 d.p.i. for dog isolate and T.nativa, at 36 d.p.i. for T.spiralis and at 38 d.p.i. for swine isolate.