RESULTS	Biopsies taken at the end of the period of myocardial ischaemia , when compared to control , did not show any significant change in the intracellular concentration of ATP ( from 2.71 + / - 0.32 to 2.43 + / - 0.37 micromol g wet for cold blood group and from 2.6 + / - 0.3 to 2.5 + / - 0.34 micromol/g wet weight for hot shot group ) or total free intracellular amino acids pool ( from 33.0 + / - 1.4 to 30.0 + / - 1.4 micromol/g wet weight for cold blood group and from 34.0 + / - 1.4 to 34.5 + / - 2.3 micromol/g wet weight for hot shot group ) .\