Cell and Microbial Authentication Cell and microbial authentication is of the utmost importance. Skipping the authentication step can lead to lost time, money and publications owing to cross-contamination and misidentification. ATCC can quickly and easily help you confirm the identity of almost any cell or microbe using a range of analytical techniques. We offer the following standardized services: Human Cell Line Authentication Short Tandem Repeat (STR) Profiling Next-Generation Sequencing (NGS) by: 16S rRNA Sequencing Targeted Sequencing Nucleic acid quantitation by: Droplet Digital PCR (ddPCR™) Quantitative Real-Time PCR (qPCR) RNA analysis by: Reverse Transcription PCR (RT-PCR) Real-Time Reverse Transcription PCR (qRT-PCR)