A crystalline exocytotic organelle composed of small, acidic proteins existing primarily as disulphide-linked dimers. The trichocyst is an organelle that releases long filamentous proteins that capture predators in net-like structures, to slow them down when the cell is disturbed. The protein is nontoxic and shaped like a long, striated, fibrous shaft.
Source:
GOC:rph,
http://www.iscid.org/encyclopedia/,
PMID:3667715,
GOC:jid