G lax o ▁builds ▁bon ny ▁b ab ies ." ▁The ▁Gla x o ▁Labor ator ies ▁sign ▁is ▁still ▁visible ▁( right ) ▁on ▁what ▁is ▁now ▁a ▁car ▁repair ▁shop ▁on ▁the ▁main ▁street ▁of ▁Bun ny th or pe . ▁The ▁company ' s ▁first ▁ph arma ce ut ical ▁product , ▁released ▁in ▁ 1 9 2 4 , ▁was ▁vit amin ▁D . ▁ ▁Gla x o ▁Labor ator ies ▁was ▁incorpor ated ▁as ▁a ▁distinct ▁subs idi ary ▁company ▁in ▁London ▁in ▁ 1 9 3 5 . ▁Joseph ▁Nathan ' s ▁share hold ers ▁re organ ised ▁the ▁group ' s ▁structure ▁in ▁ 1 9 4 7 , ▁making ▁Gla x o ▁the ▁parent ▁and ▁obtained ▁a ▁listing ▁on ▁the ▁London ▁Stock ▁Exchange . ▁Gla x o ▁acquired ▁Allen ▁& ▁Han bur ys ▁in ▁ 1 9 5 8 . ▁The ▁Scottish ▁ph arm ac ologist ▁David ▁Jack ▁was ▁h ired ▁as ▁a ▁research er ▁for ▁Allen ▁& ▁Han bur ys ▁a ▁few ▁years ▁after ▁Gla x o ▁took ▁it ▁over ; ▁he ▁went ▁on ▁to ▁lead ▁the ▁company ' s ▁R & D ▁until ▁ 1 9 8 7 . ▁After ▁Gla x o ▁bought ▁Meyer ▁Labor ator ies ▁in ▁ 1 9 7 8 , ▁it ▁began ▁to ▁play ▁an ▁important ▁role ▁in ▁the ▁US ▁market . ▁In ▁ 1 9 8 3 , ▁the ▁American ▁arm , ▁Gla x o ▁Inc ., ▁moved ▁to ▁Research ▁Tri angle ▁Park ▁( US ▁headquarters /