| The mixture was later solidified by means of a surface agar solution containing traces of histidine and biotin. |
| The company says the antioxidant vitamin, along with biotin can help slow or delay aging of the skin and help maintain metabolism. |
| The endogeneous biotin was blocked by adding an excess amount of avidin followed by washing and addition of free biotin. |
| In addition to histidine and biotin, the top agar contained minimal tryptophan to support E.coli growth. |
| Interaction has been measured in this way for ligand-receptor pairs of biotin and avidin, complementary DNA pairs, and antigen-antibody pairs. |
| The vitamin B complex consists of B1, B2, B6, pantothenic acid, biotin and folic acid. |
