( They ( also ( ( found ( that ( ( despite ( their ( ( unusually small ) ( cell size ) ) ) ) ( it ( is ( common ( to ( find ( ( ( ( more ( than one ) ) type ) ( of ( virus ( attached ( to ( the cells ) ) ) ) ) ) ( while ( in ( the biofilms ) ) ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (PRP They)) (ADVP (RB also)) (VP (VBD found) (SBAR (IN that) (S (PP (IN despite) (NP (PRP$ their) (ADJP (RB unusually) (JJ small)) (NN cell) (NN size))) (NP (PRP it)) (VP (VBZ is) (ADJP (JJ common) (S (VP (TO to) (VP (VB find) (NP (NP (QP (JJR more) (IN than) (CD one)) (NN type)) (PP (IN of) (NP (NP (NN virus)) (VP (VBN attached) (PP (TO to) (NP (DT the) (NNS cells)))))) (SBAR (IN while) (FRAG (PP (IN in) (NP (DT the) (NNS biofilms)))))))))))))) (. .)))
They also found that despite their unusually small cell size it is common to find more than one type of virus attached to the cells while in the biofilms.
(ROOT (S (NP (DT All) (NNS cells)) (VP (VBP have) (NP (NP (DT the) (JJ small) (NN size)) (PP (IN in) (NP (JJ common))))) (. .)))