tokens: The first exon ( exon 1A ) that corresponded to the 5 ' - untranslated region of the GHR 1A mRNA was 15,250 bp upstream from exon 2 in the GHR gene .
folded_tokens: the first exon ( exon 1a ) that correspond to the 5 ' - untranslated region of the ghr 1a mrna be 15,250 bp upstream from exon 2 in the ghr gene .