( ( ( The microfibrils ) ( in ( higher plants ) ) ) ( ( are ( made ( of ( ( cellulose , ) ( ( the ( ( most abundant ) macromolecule ) ) ( on Earth ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNS microfibrils)) (PP (IN in) (NP (JJR higher) (NNS plants)))) (VP (VBP are) (VP (VBN made) (PP (IN of) (NP (NP (NN cellulose)) (, ,) (NP (NP (DT the) (ADJP (RBS most) (JJ abundant)) (NN macromolecule)) (PP (IN on) (NP (NNP Earth)))))))) (. .)))
The microfibrils in higher plants are made of cellulose, the most abundant macromolecule on Earth.
(ROOT (S (NP (NNP Cellulose)) (VP (VP (VBZ is) (NP (NP (CD one)) (PP (IN of) (NP (NP (DT the) (ADJP (RBS most) (JJ common)) (JJ biochemical) (NNS compounds)) (PP (IN on) (NP (NN earth))))))) (CC and) (VP (VBZ is) (VP (VBN found) (PP (IN in) (NP (DT all) (NNS plants)))))) (. .)))