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Traditionally, fetal bovine serum (FBS) has been the principal component in media used in the growth and maintenance of cell cultures. Recent shortages have affected the cost and availability of FBS to clinical laboratories. Furthermore, lot-to-lot variability can affect cell culture performance and growth. We evaluated a commercially available serum replacement (Omni Serum; Advanced Biotechnologies Inc., Columbia, Md.) for use in the growth of cell cultures and for use in maintenance media used for the isolation of herpes simplex virus from clinical specimens. Cells (rhabdomyosarcoma and mink lung) raised on 5% Omni Serum grew as well as those grown on 10% FBS. The sensitivity of the Omni-raised cells to herpes simplex virus that had been isolated from 111 clinical specimens was equal to that of the cells raised and maintained with FBS. Cells grown with 10% FBS and maintained with 2% Omni Serum displayed the same sensitivity and integrity in tubes (rhabdomyosarcoma and mink lung) and vials (MRC-5 cells) as cells grown with 10% FBS and maintained with 5% FBS. This study indicates that Omni Serum is an acceptable substitute for FBS in maintenance media for cell culture tubes and vials used for viral isolation from clinical specimens.

Comparison of a serum replacement (Omni Serum) and fetal bovine serum in cell cultures used to isolate herpes simplex virus from clinical specimens