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He was vocal against the Indo-US civilian nuclear agreement and expressed that the deal favored the USA Career in Department of Atomic Energy Iyengar joined the Tata Institute for Fundamental Research , Department of Atomic Energy in 1952 as a Junior Research Scientist , undertaking a wide variety of research in neutron scattering .
 USA, Atomic Energy Iyengar, Research, Department of Atomic Energy, Research
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 USA, Atomic Energy Iyengar, Research, Department of Atomic Energy, Research