However, notes Yang, there are already several million people in the world with the AIDS virus (a retrovirus) multiplying in their bodies, yet genes for this retrovirus have not yet been found to enter human reproductive cells for transmission to the next generation.
不過，楊文光指出，目前世界上已有幾百萬個病人體內有愛滋病毒（反轉錄病毒）在繁殖，但尚未發現這個反轉錄病毒的基因會插入人類的生殖細胞，而遺傳給下一代。