"Concentration of 2,2',5,5'-tetrachlorobiphenyl {PCB52 CAS 35693-99-3} per unit dry weight of biota {Squalus acanthias (ITIS: 160617: WoRMS 105923) [Subcomponent: muscle tissue]}"@en . . "SDN:P01::C052WSD2" . "The amount (mass or number of moles) of the specified analyte per unit weight of the specified organism or part thereof after water has been removed."@en . .