1 9 7 4 ▁and ▁did ▁his ▁doctor al ▁studies ▁at ▁the ▁University ▁of ▁Del aware ▁under ▁the ▁guidance ▁of ▁Prof . ▁Ro berta ▁F . ▁Col man ▁to ▁secure ▁a ▁Ph D ▁in ▁ 1 9 8 1 . ▁His ▁post - do ctor al ▁studies ▁were ▁at ▁Bran de is ▁University ▁at ▁the ▁labor atory ▁of ▁Prof . ▁Alfred ▁Red field ▁( 1 9 8 1 – 8 2 ) ▁and ▁at ▁the ▁National ▁Instit utes ▁of ▁Health ▁( 1 9 8 2 – 8 6 ). ▁Return ing ▁to ▁India ▁in ▁ 1 9 8 6 , ▁he ▁joined ▁B ose ▁Institute , ▁Kol k ata ▁as ▁a ▁Senior ▁L ect urer ▁in ▁the ▁department ▁of ▁Bi oph ys ics . ▁He ▁served ▁the ▁Institute ▁till ▁ 2 0 0 4 ▁holding ▁positions ▁of ▁Re ader ▁and ▁then ▁Professor ▁of ▁Bi oph ys ics ▁when ▁he ▁moved ▁to ▁the ▁Indian ▁Institute ▁of ▁Chem ical ▁Bi ology ▁( II CB ) ▁as ▁its ▁Director . ▁After ▁comple ting ▁ 1 0 ▁years ▁as ▁the ▁Director ▁of ▁II CB , ▁ ▁he ▁returned ▁to ▁B ose ▁Institute ▁in ▁ 2 0 1 4 ▁as ▁a ▁Senior ▁Professor ▁and ▁Dean ▁of ▁studies . ▁While ▁at ▁II CB , ▁he ▁has ▁served ▁the ▁nation ▁in ▁several ▁different ▁high ▁level ▁capac ities ▁such ▁as ▁the ▁Found er - Direct or - in - charge ▁of ▁the ▁National ▁Institute ▁of ▁Ph arma ce ut ical ▁Education ▁and ▁Research , ▁Kol k ata ▁( N IP ER