RNase protection analysis of 5'UTS region of Rattus Syt1(A) 5'UTS probe aj617620. (B) 5'UTS probe aj617621. (C) 5'UTS probe aj617622. Lane 1: Rattus norvegicus brain mRNA. Lane 2: Rattus rattus brain mRNA. The uppermost bands are full-length products from mRNA transcripts which match the input probe across its whole length. Shorter products result from partially matching mRNA transcripts.