keywords: guidant stock buy johnson companies
text: J J Seals \$25.4 Bln Pact to Buy Guidant  PHILADELPHIA (Reuters) - Johnson   Johnson has agreed to  buy Guidant Corp. for \$25.4 billion in cash and stock, the  companies said on Wednesday, giving the healthcare products  maker a foothold in the fast-growing market for implantable  devices that regulate heartbeats.