Fig. 3.

Competition of binding to human [¹²⁵I]insulin by alpha- (dotted line) and beta-casein (grey line) in comparison to human insulin (black line) from the six children with insulin autoantibodies (IAA) that bind to whole bovine milk; in (a) subject 2, (b) subject 3, (c) subject 5, (d) subject 6, (e) subject 7 and (f) subject 8. The affinities to the competing protein are indicated by the numbers within the figures (l/mol). IAA in (a) and (d) bind better to alpha-casein than to human insulin, and in (b), (c), (e) and (f) bind to human insulin only. IAA are expressed as bound radioactivity in counts per minute (cpm).