The first-generation hemoglobin blood substitutes rely on molecular modifications of hemoglobin,either by chemically cross linking the molecules or by modifying them using recombinant DNA technology.是什么意思_The first-generation hemoglobin blood substitutes rely on molecular modifications of hemoglobin,either by chemically cross linking the molecules or by modifying them using recombinant DNA technology.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句