Subject: ADRC-343C Dear Wonseok Son, We are currently curating the abstracts for the upcoming Bellevue (Seattle) Annual Drosophila Research Conference, for FlyBase. I am writing in connection with your abstract: 'collier, a Transcription Factor of the COE Family, Is Required for the Larval Olfaction in Drosophila' You mention an enhancer trap allele that is new to FlyBase, col85. Could you tell us which enhancer trap element is inserted in this allele? If it is one of the ones that originates in the BDGP or Szeged collections then what is the indertion identifier number? If we know these things we can make the proper links in FlyBase. I realise that you are not necessarily the best choice of author for me to contact, but you are the first author for this abstract whose address I found in the FlyBase people file. If you want to pass it on to someone more appropriate, then please go ahead. Thank you for your help, with best wishes, Rachel. Subject: Dear, Dr. Drysdale. Dear, Dr. Drysdale. The enhancer trap element in col85 is PlArB. I think that it is'nt necessary to explain more about the famous P-element. The mutant was generated in the previous screening of genes which express in the olfactory system in our lab. Don't hesitate if any more question. Sincerely. Wonseok Son