laboratory diagnostic - testing and comparison - biological samples and assessment reports - quality control - internal - reference strains - qualitative - Shigella sonnei, equivalent collections 29930, NCTC 12984, WDCM 00127, vial x10 discs, keep in the freezer, C.F.U between 10^6-10^9, freeze-dried, water-soluble, used in solid or liquid media, code L37RS1085-10,todylaboratories®