It is a 100X concentrate of various amino acids present in Glasgow’s Minimum Essential Medium(GMEM). Addition of amino acid supplement to medium stimulates growth and prolongs viability of cells in culture. ACL003 is a sterile filtered GMEM amino acid solution prepared in cell culture grade water. It is a 100X concentrate of various amino acids present in Glasgowâs Minimum Essential Medium(GMEM). Addition of amino acid supplement to medium stimulates growth and prolongs viability of cells in culture. ACL003 is a sterile filtered GMEM amino acid solution prepared in cell culture grade water.