31. The casein is then sanded down to reveal the soft, dreamy portraits within. 32. Added to milk, it will act on milk protein especially on-Casein . 33. Guar gum and micellar casein mixtures can be slightly thixotropic if a biphase system forms. 34. Regular margarine contains trace amounts of animal products such as whey or dairy casein extracts. 35. For example, a fully operational prototype device detecting casein in milk has been fabricated. 36. Genetic variants of the beta-casein milk protein that differ by one amino acid. 37. He rendered the illustrations in casein paint. 38. The region of conserved synteny was the gene casein kinase I epsilon ( CKIe ). 39. Most of the casein in human breast milk is the A2 type beta-casein. 40. Most of the casein in human breast milk is the A2 type beta-casein .