Health care trade associations are betting the Senate version of the health reform will win out in the tussle to come.

Many of the House-passed provisions may end up missing from the version being spearheaded by Senate Majority Leader Harry Reid, a Nevada Democrat. If the Senate passes a separate bill, it will have to be merged with the House plan, giving industries weeks or months to whittle away at policies they don’t like.

“Passage of the House bill is historic,” said Paul Heldman, a health-policy analyst with Potomac Research Group in Washington. “But there’s a whole other chapter in the debate yet to be written.”