PT - JOURNAL ARTICLE AU - Shortridge, K F AU - Hu, L Y TI - Virus titrations using trypsin modified erythrocytes. AID - 10.1136/jcp.30.10.993 DP - 1977 Oct 01 TA - Journal of Clinical Pathology PG - 993--995 VI - 30 IP - 10 4099 - http://jcp.bmj.com/content/30/10/993.short 4100 - http://jcp.bmj.com/content/30/10/993.full SO - J Clin Pathol1977 Oct 01; 30