Tic
Motor tics are movement-based tics affecting discrete muscle groups.
Tac-Promoter
The Tac-Promoter (abbreviated as Ptac), or tac vector is a synthetically produced DNA promoter, produced from the combination of promoters from the trp and lac operons. It is commonly used for protein production in Escherichia coli, Pichia pastoris and similar analytical operations including the ones leading to processes like molecular cloning.