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During a 6-month period, a combination of gamete intrafallopian transfer (GIFT) and in vitro fertilization (IVF) was offered to all couples beginning an IVF treatment cycle in whom the wife had anatomically normal fallopian tubes. It was recommended to these couples that sufficient oocytes be reserved for insemination in vitro to determine whether the(More)
Current approaches for optogenetic control of transcription do not mimic the activity of endogenous transcription factors, which act at numerous sites in the genome in a complex interplay with other factors. Optogenetic control of dominant negative versions of endogenous transcription factors provides a mechanism for mimicking the natural regulation of gene(More)
Photoswitchable proteins are becoming increasingly common tools for manipulating cellular processes with high spatial and temporal precision. Photoactive yellow protein (PYP) is a small, water-soluble protein that undergoes a blue light induced change in conformation. It can serve as a scaffold for designing new tools to manipulate biological processes, but(More)
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