Exons and introns refer to specific nucleotide base sequences in the genetic code that are involved in producing proteins. Exons are the DNA bases that are transcribed into mRNA and eventually code for amino acids in the proteins. Introns are DNA...

Exons and introns refer to specific nucleotide base sequences in the genetic code that are involved in producing proteins. Exons are the DNA bases that are transcribed into mRNA and eventually code for amino acids in the proteins. Introns are DNA bases...

Introns, derived from the term "intragenic regions", are non-coding sections of DNA or precursor mRNA (hnRNA). Once a DNA sequence has been transcribed as a hnRNA strand, the introns will be spliced out. The resulting mRNA sequence will then be...

The drugmaker Schering-Plough Corp. said Monday its fourth-quarter profit surged 75 percent as strong sales of its Remicade and Nasonex treatments helped offset rising costs.Net income totaled $182 million, or 12 cents per share, up from $104 million, or 7 cents per share, a year...

The Drugmaker Schering-Plough Corp. said Monday its fourth-quarter profit surged 75 percent as strong sales of its cholesterol, arthritis and medicines helped offset rising costs.Kenilworth, N.J.-based Schering-Plough said net income totaled $182 million, or 12 cents per share, up from $104 million, or 7 cents...

Schering-Plough Corp. said Monday its fourth-quarter profit surged 75 percent as strong sales of the drugmaker's cholesterol, arthritis and allergy medicines helped offset rising research and marketing spending.Kenilworth, N.J.-based Schering-Plough said net income totaled $182 million, or 12 cents per share, up from $104 million,...

Bristol-Myers Squibb Co. and a former subsidiary have agreed to pay more than $515 million to settle federal and state investigations into their drug marketing and pricing practices.The civil settlement announced Friday resolves a broad array of allegations against Bristol-Myers Squibb, dating from 1994 through...