Why some probes have "NA" for SYMBOL but having ENTREZID as well as the TAIR accession number and what can I do when single probe having more than one GENE SYMBOL, ENTREZID and TAIR Accession. Kindly suggest on below table. Which gene from the probe id 263153_s_at, I can select for further studies? Any suggestions would be highly appreciated.
PROBEID SYMBOL ENTREZID TAIR
256891_at NA 821436 AT3G19030
263153_s_at GLL22 841838 AT1G54000
263153_s_at GLL23 841839 AT1G54010