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Table 2 Mean serum thymidine kinase 1 (STK1) specific activity values in different groups and comparison with blood donors

From: Breast and prostate cancer patients differ significantly in their serum Thymidine kinase 1 (TK1) specific activities compared with those hematological malignancies and blood donors: implications of using serum TK1 as a biomarker

   STK1 specific activity (nmol/min/mg)    
Tumor type N Mean ± SD Range (nmol/min/mg) Comparison with blood donors P value
MDS 22 136 ± 112 30 -515 no signifcant difference 0.635
Breast cancer 42 79 ± 69 12 -268 Yes (***) 0.0005
Prostate cancer 47 62 ± 47 11 - 183 Yes (***) <0.0001
Blood donors 30 130 ± 62 29 - 243   
  1. *indicates the significant difference levels (* = low, ** = medium, *** = high).