( ( Some ( of ( the ( ( most complex ) ( biological medicines ) ) ) ) ) ( ( are ( living ( ( entities , ) ( such ( as ( ( the ( ( bacteria and ) viruses ) ) ( used ( as ( live ( attenuated vaccines ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT Some)) (PP (IN of) (NP (DT the) (ADJP (RBS most) (JJ complex)) (JJ biological) (NNS medicines)))) (VP (VBP are) (VP (VBG living) (NP (NP (NNS entities)) (, ,) (PP (JJ such) (IN as) (NP (NP (DT the) (NNS bacteria) (CC and) (NNS viruses)) (VP (VBN used) (PP (IN as) (NP (JJ live) (JJ attenuated) (NNS vaccines))))))))) (. .)))
Some of the most complex biological medicines are living entities, such as the bacteria and viruses used as live attenuated vaccines.
(ROOT (S (NP (NNS Viruses)) (VP (VBP are) (NP (NP (DT the) (ADJP (RBS most) (JJ abundant)) (NN type)) (PP (IN of) (NP (NP (JJ biological) (NN entity)) (PP (IN on) (NP (DT the) (NN earth))))))) (. .)))