▁from ▁ 1 9 2 6 ▁to ▁present . ▁Special ized ▁indexing ▁has ▁also ▁been ▁developed , ▁which ▁has ▁increased ▁the ▁accuracy ▁of ▁retr ieval . ▁Tax onom ic ▁data ▁and ▁terms , ▁en hanced ▁disease ▁terms , ▁sequ enced ▁datab ank ▁numbers , ▁and ▁a ▁concept ually ▁controlled ▁voc ab ul ary ▁go ▁back ▁to ▁ 1 9 6 9 . ▁ ▁Some ▁U . S . ▁pat ents ▁are ▁also ▁part ▁of ▁the ▁B IOS IS ▁Pre views ▁arch ives ▁from ▁ 1 9 2 6 ▁to ▁ 1 9 6 8 , ▁from ▁ 1 9 8 6 ▁to ▁ 1 9 8 9 , ▁and ▁from ▁ 1 9 9 4 ▁to ▁present . ▁Arch ived ▁data ▁is ▁the ▁electronic ▁formatted ▁content ▁of ▁the ▁print ▁Bi ological ▁Abstract s ▁volumes ▁ 1 - 4 9 . ▁ ▁Print ▁counter parts ▁The ▁print ▁counter parts ▁for ▁this ▁bibli ographic ▁index ▁were : ▁▁ ▁Bi ological ▁Abstract s ▁Bi ological ▁Abstract s / R R M ▁Bio Res earch ▁Index ▁ ▁Top ic ▁coverage ▁The ▁subject ▁areas ▁covered ▁in ▁B IOS IS ▁Pre views ▁are ▁broad ▁and ▁inter dis cipl inary . ▁Content ▁is ▁available ▁from ▁all ▁life ▁sciences ▁discipl ines . ▁This ▁includes ▁traditional ▁bi ology ▁( e . g . ▁bot any , ▁e col ogy , ▁zo ology ) ▁and ▁inter dis cipl inary ▁subjects ▁( e . g . ▁bio chem istry , ▁bi om edic ine , ▁bi ote chn ology ). ▁Select ▁literature ▁from ▁the