Using transposon-mediated gene-trap mutagenesis. we have generated a novel mouse mutant termed Blad (Bloated Bladder). Homozygous mutant mice die perinatally showing a greatly distended bladder. underdeveloped diaphragm and a reduction in total skeletal muscle mass. https://www.roneverhart.com/2-1-2-x-1-4-x-36-Smooth-Saddle-Threshold-NGP-410-36/