1.14.13.20	tetramer	alpha4, 4 * 69000, SDS-PAGE	
1.14.13.20	tetramer	alpha4, 4 * 66000, SDS-PAGE	
1.14.13.20	tetramer	alpha2beta2, 2 * 67000 + 2 * 45000, SDS-PAGE	
1.14.13.20	tetramer	alpha4, 4 * 63000, SDS-PAGE	
1.14.13.20	tetramer	alpha4, 4 * 64000, SDS-PAGE