Planarian cholinesterase: molecular and functional characterization of an evolutionarily ancient enzyme to study organophosphorus pesticide toxicity is published by Hagstrom et al. The sequences of the two cholinesterases of Dugesia japonica are available (dugja-CHE1, dugja-CHE2). A potent selective and cell-active heteroatom-rich organoboron inhibitor (MIDA-ester-4j) of the (ox)lipid-metabolizing enzyme alpha/beta-hydrolase domain 3 (ABHD3) (human-ABHD3) is described by Tan et al. Use of (Hupresin) to capture red blood cell acetylcholinesterase for detection of soman exposure is published by Onder et al.