Hepatitis B vaccines progressed from blood vaccines to recombinant vaccines, then to peptide vaccines and DNA vaccines, to their functions extended from prophylactic to therapeutic.是什么意思_Hepatitis B vaccines progressed from blood vaccines to recombinant vaccines, then to peptide vaccines and DNA vaccines, to their functions extended from prophylactic to therapeutic.在線翻譯_英語_讀音_用法_例句