PT - JOURNAL ARTICLE AU - McKay, G S TI - Gram stain modified to improve colour contrast. AID - 10.1136/jcp.23.2.191-a DP - 1970 Mar 01 TA - Journal of Clinical Pathology PG - 191 VI - 23 IP - 2 4099 - http://jcp.bmj.com/content/23/2/191.1.short 4100 - http://jcp.bmj.com/content/23/2/191.1.full SO - J Clin Pathol1970 Mar 01; 23