{'fraction_non_alphanumeric': 0.027422303473491772, 'fraction_numerical': 0.025594149908592323, 'mean_word_length': 5.088888888888889, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Transgenic sheep designed for transplantation studies

Lentiviral vectors have recently emerged as an efficient method of transgene delivery to the germline of animals. We now demonstrate that combining this efficiency with embryo splitting procedures enables the production of monozygotic twins, one of which is transgenic. We propose that this approach can be used to generate animals in which cell or tissue transplantation can be achieved without the use of immunosuppressive regimes. Mol. Reprod. Dev. 76: 61–64, 2009. © 2008 Wiley‐Liss, Inc.