( ( ( ( ( ( ( The sperm ) and ) ( ( a ( small amount ) ) ( of ( the ( egg material ) ) ) ) ) ( ( are quickly ) ( ( injected back ) ( into ( the egg ) ) ) ) ) and ) ( ( the micropipette ) ( is removed ) ) ) . )
(ROOT (S (S (NP (NP (DT The) (NN sperm)) (CC and) (NP (NP (DT a) (JJ small) (NN amount)) (PP (IN of) (NP (DT the) (NN egg) (NN material))))) (VP (VBP are) (ADVP (RB quickly)) (VP (VBN injected) (PRT (RP back)) (PP (IN into) (NP (DT the) (NN egg)))))) (CC and) (S (NP (DT the) (NN micropipette)) (VP (VBZ is) (VP (VBN removed)))) (. .)))
The sperm and a small amount of the egg material are quickly injected back into the egg and the micropipette is removed.
(ROOT (S (NP (NNS Micropipettes)) (VP (VBP are) (ADJP (JJ suitable) (PP (IN for) (S (VP (VBG measuring) (NP (NP (ADJP (RB very) (JJ small)) (NNS amounts)) (PP (IN of) (NP (NNS liquids))))))))) (. .)))