three anaesthetics ( halothane , cf3chclbr ; ethrane , f2 hcof2cchclf ; cyclopropane ) and one other halogenated , short-chain hydrocarbon ( f-12 , cl2f2c ) were tested under various conditions to determine their effects on the viability of cells of escherichia coli and the activities of some of its enzymes .
C0018549
halothane
C0020250
halogenated