Abstract Background Copy number variation (CNV) contributes to the variation observed between individuals and can influence human disease progression. but the accurate measurement of individual copy numbers is technically challenging. In the work presented here we describe a modification to a previously described paralogue ratio test (PRT) method for genotyping the CCL3L1/CCL4L1 copy ... https://lockdownsecuritycanada.shop/product-category/door-lock-relay-pack/