foreign genes的用法和樣例：
例句
- Only about one out of a million cells will correctly incorporate a foreign gene using the most common versions of this technique.
應用這種最常規的技術，僅有百萬分之一的細胞可以正確加人外源基因。 - Because these viruses abortively infect human and most mammalian cells yet still effectivelypresent encoded forgein genes to the host immune system.
因為這類病毒不能感染人和大多數哺乳動物細胞，卻可以有效地將外源基因編碼的蛋白遞呈給宿主免疫系統。
