Such isolation can explain the very low citation rates of works by authors affiliated with Indian organizations even though they hold the leading position in terms of the total number of publications in the field of nanotoxicology (Table ). In our opinion, this is evidenced in Figure . Most Indian and Iran organizations integrated into a cluster isolated from the cluster of American and Chinese organizations. In our opinion, it demonstrates that the research of the leading Indian organizations focused on their own country (applied aspects) or Saudi Arabia and Malaysia. Simultaneously, research of the USA, China, and, to a less extent, Saudi Arabia organizations have global, fundamental aspects. and) are grouped following geographic proximity. The "red" cluster is multinational, which is in our opinion, is beneficial for nanotoxicology development.