Tetro™ Reverse Transcriptase is a Moloney Murine Leukaemia Virus (MMLV) Reverse Transcriptase, which exhibits high stability, with no loss of activity following 1 week at room temperature. Tetro Reverse Transcriptase is highly sensitive even when the amount of template is a limiting factor (fig. 1), with highly efficient and sensitive transcription, from as little as 10 pg, up to 5 μg of RNA (fig. 2). Many RNA transcripts form stable secondary structures at lower temperatures, making them less suitable as templates for RT-PCR at those temperatures. Tetro Reverse Transcriptase is suitable for first-strand cDNA synthesis, with total RNA, mRNA and in vitro transcribed RNA and shows excellent performance with gene-specific primers, Oligo (dT) as well as random hexamers, making it perfect for cDNA library construction and the production of templates for RT-PCR analysis of gene expression.