ovalbumin , bovine serum albumin , igg- , iga- and igm-globulin proteins , as standards were , among others , centrifuged in a fixed angle rotor ( beckman type 50 ) in 5-20 % ( w/v ) sucrose density gradient for 300 min , at a speed of 40,000 rpm , at 5 degrees c .
C0017649
globulin
C0033684
proteins