1. between the increase in RAR B expression RARf mRNA increased from 7 of 24 before
2. and clinical response suggests that RARf to 21 of 24 after treatment respectively.
3. has a role in mediating retinoid response. There was a strong agreement between the
4. RAR B expression may depend on the cellu- binding of anti-RA-MAbs and the expres
5. lar level of retinoids because this receptor's sion of RARP (52). Thus we propose the