How can I obtain gene symbols of these gens by R or by online tools? (Maybe you say by online converters such as BioMart I can convert GB_ACC to gene symbol. But, the problem is that in the GB_ACC column there are different formats of IDs like NM_201591(a RefSeq ID), BX100997, BC043554 (a gene bank accession number) and NR_038236.)
Thank you so much.