hiː ˈɔːlsoʊ wˈɜːkt fɚɹə wˈaɪl ɪn ɹᵻsˈɜːtʃ ɪn bɜːlˈɪn wˌɛɹ hiː bɪɡˈæn ɐ lˈaɪflɔŋ fɹˈɛndʃɪp wɪð ˈɜːnst tʃˈeɪn.
He also worked for a while in research in Berlin where he began a lifelong friendship with Ernst Chain.