The Institute of Genetics and Animal Biotechnology of the Polish Academy of Sciences (IGAB PAS) is pleased to announce that the Nature Reviews Drug Discovery article Natural products in drug discovery: advances and opportunities, led by Prof. Atanas G. Atanasov, Professor of IGAB PAS, has been distinguished as a Citation Classic. Since its publication in 2021, the highly influential article has been cited more than 4,000 times in the scientific literature.