Degradation of human IgM anti-gamma-globulin by pepsin provides evidence of an active fragment.

@article{Schrohenloher1969DegradationOH,
  title={Degradation of human IgM anti-gamma-globulin by pepsin provides evidence of an active fragment.},
  author={Ralph E. Schrohenloher},
  journal={Nature},
  year={1969},
  volume={223 5203},
  pages={308-10}
}