4LSZ:
reference: Combined inhibition of caspase 3 and caspase 7 by two highly selective DARPins slows down cellular demise., Flutsch A, Ackermann R, Schroeder T, Lukarska M, Hausammann GJ, Weinert C, Briand C, Grutter MG, Biochem J. 2014 Jul 15;461(2):279-90. doi: 10.1042/BJ20131456. PMID: 24779913

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