The PAS reagent stained the capsule. Inclusions inside the Nurse cells also stained positive with PAS (arrow). L, larva.

Bar = 50 µm.

Anti-type IV collagen antibody reacted with the capsule (C), some regions of the Nurse cell cytoplasm (arrows) and the glycocalyx of normal muscle cells (arrowheads).

Bar = 450 µm

Anti-type VI collagen antibodies reacted with thecapsule (C), some regions of the Nurse cell cytoplasm (arrow), and the glycocalyx of normal muscle cells (arrowhead). L, larva.

Bar = 50 µm

Anti-type VI collagen antibodies also reacted with the outer capsule (C) of Nurse cells in human muscle tissue. Arrow, artery.

Bar = 450 µm