( ( ( Both ( ( protozoans and ) helminths ) ) ( -LRB- ( ( ( nematodes , ) ( ( cestodes and ) trematodes ) ) -RRB- ) ) ) ( ( will ( be ( ( considered ( with emphasis ) ) ( on ( ( the ( ( most important ) parasites ) ) ( of ( ( humans and ) ( domestic animals ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT Both) (NNS protozoans) (CC and) (NNS helminths)) (PRN (-LRB- -LRB-) (NP (NP (NNS nematodes)) (, ,) (NP (NNS cestodes) (CC and) (NNS trematodes))) (-RRB- -RRB-))) (VP (MD will) (VP (VB be) (VP (VBN considered) (PP (IN with) (NP (NN emphasis))) (PP (IN on) (NP (NP (DT the) (ADJP (RBS most) (JJ important)) (NNS parasites)) (PP (IN of) (NP (NP (NNS humans)) (CC and) (NP (JJ domestic) (NNS animals))))))))) (. .)))
Both protozoans and helminths (nematodes, cestodes and trematodes) will be considered with emphasis on the most important parasites of humans and domestic animals.
(ROOT (S (NP (NNS Nematodes)) (VP (MD can) (VP (VB be) (NP (NP (DT a) (NN parasite)) (PP (IN of) (NP (DT both)))))) (. .)))
Nematodes can be a parasite of both.