sentence: Richmond , CA ) , rabbit - α - Nup50 ( Brandt et al ., 2006 ) , mouse - α - Lamin Dm0 ( kindly provided by H. Saumweber , Humboldt-Universit ä t , Berlin , Germany ) , guinea pig - α - LBR , guinea pig - α - Otefin , guinea pig - α - dMAN1 ( all three antibodies were kindly provided by G. Krohne , Biozentrum Universit ä t , Wurzburg , Germany ) , mouse - α - LaminC ( Developmental Studies Hybridoma Bank , University of Iowa , Iowa City , IA ) , guinea pig - α - Slam ( Brandt et al ., 2006 ) , rabbit - α - barrier-to-autointegration factor ( BAF ; kindly provided by P.