Many of Athena’s Cell Culture Products are Serum-Free Media developed for use in mammalian tissue culture research. Athena provides an array of serum-free media in addition to several supplementary products to aid in the growth and preservation of mammalian cell lines. The above symbol indicates our serum-free products. Viral, bacterial, and fungal contamination of serum is common and presents serious safety hazards for manufacturers of biopharmaceuticals. The use of serum-free media significantly reduces the possibility of this potential contamination.