生物化学，微生物学和分子生物学哲学博士

Submissions from domestic and international applicants with a bachelor's degree or higher in a relevant field will be considered.
Three recommendation letters. At least one letter from a research adviser(s) is recommended. Please note that recommendation letters are to be submitted by the referees (not by the applicant), and that the letters must be received for the application to be considered complete.

Curriculum Vitae/Resume - Upload unofficial and/or scanned versions of transcripts for all institutions attended directly into the online application. The Graduate School will require all accepted students to submit official transcripts prior to enrollment at Penn State. International applicants must take and submit scores for the TOEFL (Test of English as a Foreign Language) or the IELTS (International English Language Testing System), with the exceptions noted below. The minimum acceptable score for the TOEFL is 550 for the paper-based test, 213 for the computer-based test, or a total score of 80 with a 19 on the speaking section for the Internet-based test (iBT). Applicants with iBT speaking scores between 15 and 18 may be considered for provisaaional admission, enrollment, and, if necessary, remedial course work. The minimum composite score for the IELTS is 6.5. Revised TOEFL PBT July 2017 and later 60