Quads vs possible Quads?

[johnd192]

7 handed 25$ PP no limit. One poster UTG and I'm the button:
9 [img]/images/graemlins/diamond.gif[/img] 9 [img]/images/graemlins/heart.gif[/img]
Poster checks. EP calls. MP calls. LP folds. I call. SB completes. BB checks. 6 to the flop.
Flop: 9 [img]/images/graemlins/club.gif[/img] J [img]/images/graemlins/heart.gif[/img] J [img]/images/graemlins/club.gif[/img]
Nice a full house flop...
SB checks. BB bets .50. Poster folds. EP calls. MP calls. I call. SB folds.
Turn: 9 [img]/images/graemlins/heart.gif[/img]
Nice quads...
BB bets .50. EP calls. MP folds. I call. Slow play seemed right as I thought 1 would have a J and would hang himself
on the river.
River: J [img]/images/graemlins/spade.gif[/img]
ARGH!!!
BB bets .50. EP raises to 4 and I call. BB folds.
Does anyone raise here? This hand was posted
because it was such an interesting board.
EP had Q [img]/images/graemlins/club.gif[/img] 3 [img]/images/graemlins/heart.gif[/img] and I took the very modest pot.