A delicate colour reaction for the presence of vitamin A.

[1] COWARD, 1923, BIOCH J, V17, P145

[2] DRUMMOND, 1922, J SOC CHEM IND, V41, pR561

[3] DRUMMOND, 1925, J SOC CHEM IND, V44, P123

[4] DRUMMOND, 1922, ANALYST, V47, P341

[5] HARDEN, 1923, BIOCH J, V17, P115

[6] ROSENHEIM, 1920, LANCET, P862

[7] ROSENHEIM, 1925, LANCET, P1025

[8] TAKAHASHI, 1922, P JAPAN CHEM SOC, V43, P828

[9] WELMANS, 1892, J SOC CHEM IND, V11, P548

[10] WHITBY, 1923, BIOCH J, V17, P5

[1] COWARD, 1923, BIOCH J, V17, P145

[2] DRUMMOND, 1922, J SOC CHEM IND, V41, pR561

[3] DRUMMOND, 1925, J SOC CHEM IND, V44, P123

[4] DRUMMOND, 1922, ANALYST, V47, P341

[5] HARDEN, 1923, BIOCH J, V17, P115

[6] ROSENHEIM, 1920, LANCET, P862

[7] ROSENHEIM, 1925, LANCET, P1025

[8] TAKAHASHI, 1922, P JAPAN CHEM SOC, V43, P828

[9] WELMANS, 1892, J SOC CHEM IND, V11, P548

[10] WHITBY, 1923, BIOCH J, V17, P5