QAS-PCR results (including CD4⁺, CD8⁺, CD15⁺, and CD19⁺) for female trauma tx recipient E. All samples were subjected to the enrichment of CD4⁺, CD8⁺, CD15⁺, and CD19⁺ leukocyte subpopulations, followed by amplification and hybridization using human Y-chromosome–specific primers and probe.