( ( An ( inflammatory response ) ) ( ( is ( initiated ( when ( bacteria ( enter ( ( ( ( the ( mammary gland ) ) and ) this ) ( is ( ( ( the ( body 's ) ) ( second line ) ) ( of defense ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT An) (JJ inflammatory) (NN response)) (VP (VBZ is) (VP (VBN initiated) (SBAR (WHADVP (WRB when)) (S (NP (NNS bacteria)) (VP (VBP enter) (SBAR (S (NP (NP (DT the) (JJ mammary) (NN gland)) (CC and) (NP (DT this))) (VP (VBZ is) (NP (NP (NP (DT the) (NN body) (POS 's)) (JJ second) (NN line)) (PP (IN of) (NP (NN defense)))))))))))) (. .)))
An inflammatory response is initiated when bacteria enter the mammary gland and this is the body's second line of defense.
(ROOT (S (NP (JJ Inflammatory) (NN response)) (VP (VBZ is) (NP (NP (DT the) (JJ second) (NN line)) (PP (IN of) (NP (NN defense))))) (. .)))