( ( ( The ( current treatment ) ) ( for ( ( a ( blood clot ) ) ( in ( a vein ) ) ) ) ) ( ( involves ( ( taking ( a ( blood thinner ) ) ) ( for ( ( ( three to ) six ) months ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ current) (NN treatment)) (PP (IN for) (NP (NP (DT a) (NN blood) (NN clot)) (PP (IN in) (NP (DT a) (NN vein)))))) (VP (VBZ involves) (S (VP (VBG taking) (NP (DT a) (NN blood) (JJR thinner)) (PP (IN for) (NP (QP (CD three) (TO to) (CD six)) (NNS months)))))) (. .)))
The current treatment for a blood clot in a vein involves taking a blood thinner for three to six months.
(ROOT (S (NP (CD Three) (NNS steps)) (VP (VBP are) (VP (VBN involved) (PP (IN in) (NP (NN blood) (NN clotting))))) (. .)))
Three steps are involved in blood clotting.