Bird's-nest Bodies

or Cells. The cells of certain forms of carcinoma, distinguished by the concentric arrangement of their cell-walls. See also Cancer Nests. B. Edible, the nest of certain species of swift, used by the Chinese as food. It consists of marine algae, Gelidium, cemented by the salivary mucus of the bird. B. Sternum, a deformity of the sternum found in lateral curvature of the spine.