definiens: tshall mean the United States of America and its territories and possessions, Canada, Mexico and all of North America ., ( f ) shall mean the service of performing any diagnostic test by means of Sequencing by Hybridization for use on patient samples in diagnosing actual human genetic diseases and human predisposition to genetic diseases, including cancer, wherein labeled nucleic acid probes are applied in solution to unlabeled patient nucleic acid samples directly bound to a substrate ., The Field does not include tests for infectious disease or testing for research purposes * which does not include patient care . J W ~t\~ ( g ) shall mean gross billings from the sale to third parties of the Services using Technology licensed pursuant to this Agreement ( or the fair market value of any non - monetary consideration which SBCL agrees to receive in exchange for the Services ) by SBCL, or its respective Sublicensees or Affiliates ( provided that, if sales by Sublicensees or Affiliates are included in gross billings, sales between or among SBCL and its respective Sublicensees or Affiliates, as applicable, shall be excluded from gross billings ), less the following deductions to the extent such amounts offset amounts included in gross billings, it 2 204224/000S/88130Nersion # : .1 being understood that bad debt expense shall be based on an estimated provision for bad debts determined in accordance with methods generally used by SBCL to calculate bad debts, and it being further understood that if and to the extent recoveries of bad debt are made, that the amount of such recoveries will be included in gross billings or otherwise credited to Net Sales : ( i ) all discounts or rebates which are not used to offset other product or service revenues received by or to promote other products or services offered by SBCL, its Sublicensees or its Affiliates ; ( ii ) disallowances by any third party payor which are not part of a general disallowance or payment for the test or tests of its type ; ( iii ) all sales adjustments, credits or refunds ; ( iv ) bad debt expense ; and ( v ) any sales and/or use taxes and/or duties imposed upon such sales or billings