Here are data showing delivery of Vivo-Morpholinos in cultures, EGFP splice-reporter mice and mdx mice, including tissue-specific delivery measurements by RT-PCR and measurement of dystrophin exon-skipping by RT-PCR and immunohistochemistry:
Paul A. Morcos, Yongfu Li, and Shan Jiang. Vivo-Morpholinos: A non-peptide transporter delivers Morpholinos into a wide array of mouse tissues. BioTechniques. 2008 Dec;45(6):616-26.