7Salmon W D, Daughaday W H. A hormonally controlled serum factor which stimulates sulfate incorporation by cartilage in vitor [J]. J Lab Clin Med, 1957, 49:825 -836.
8Rindderkneeht E, Humbel R E. The amino acid sequence of human insulin - like growth factor - I and its structural homolo- gy with proinsulin[J]. J Biol Chem, 1978, 253 (8) : 2769 - 2776.
9Dawe S R, Francis G L, McNamara P J, et al. Purification, partial sequences and properties of chicken insulin - like growth factors[J]. J Endocrinol, 1988, 117(2): 173-181.
10Kim M H, Seo D S, Ko Y. Relationship between egg produc- tivity and insulin - like growth factor genotypes in Korean n- ative chiekensJ]. Pour Sci, 2004, 83(7) : 1203 -1208.