The four companies in clinical trials with these products use stringent multistep processes to extract hemoglobin from red cells, then purify and stabilize it, so only hemoglobin is left.
The four companies in clinical trials with these products use stringent multistep processes to extract hemoglobin from red cells, then purify and stabilize it, so only hemoglobin is left.
用这些产品进行临床试验的四家公司严格按照多个步骤的程序从红细胞中提取血红蛋白后，再进行纯化和稳定处理，最后只剩下血红蛋白。