A second round of DNA testing in the Duke University lacrosse rape case came back with the same result as the first - no conclusive match to any member of the team, defense attorneys said Friday.

Duke lacrosse player Collin Finnerty leaves the Durham County Detention Center, Tuesday, April 18, 2006, in Durham, North Carolina. Finnerty was arrested and charged with first degree forcible rape, first degree sexual assault and kidnapping in the case involving an exotic dancer who allegedly was raped while dancing at a party thrown by members of the Duke lacrosse team. [AP Photo]

Attorney Joseph Cheshire, who represents a team captain who has not been charged, said the tests showed genetic material from a "single male source" was found on a vaginal swab taken from the accuser, but that material did not match any of the players.

"In other words, it appears this woman had sex with a male," said Cheshire, who spoke at a news conference with other defense attorneys in the case. "It also appears with certainty it wasn't a Duke lacrosse player."

Cheshire said the testing did find some genetic material from several people on a plastic fingernail found in a bathroom trash can of the house where the team held the March 13 party. He said some of that material had the "same characteristics" - a link short of a conclusive match - to some of the players, but not the two who have been charged with rape, kidnapping and sexual assault.

Along with the fingernail, the trash can contained cotton swabs, tissue, toilet paper and other items that would carry the DNA of people who used the bathroom, Cheshire said.

Two members of the team have been charged with raping a stripper hired to perform at the party.

The dancer, a 27-year-old black student at nearby North Carolina Central University, told police she was raped and beaten for a half-hour by three white men at the party. A grand jury has charged sophomores Reade Seligmann, of Essex Fells, New Jersey., and Collin Finnerty, of Garden City, New York, with rape, kidnapping and sexual assault.

Defense attorneys have strongly proclaimed that all the players are innocent, consistently pointing to an initial round of DNA tests they said found no match between the 46 players tested and the accuser.

District Attorney Mike Nifong did not immediately return a call to his home seeking comment Friday night.

After the first round of tests came back from a US state crime lab without a match, Nifong said that in 75 to 80 percent of all sexual assault cases, there is no DNA evidence. In those cases, prosecutors had to proceed "the good old-fashioned way. Witnesses got on the stand and told what happened to them," he said last month.

But Stan Goldman, a Loyola Law School professor and former Los Angeles County public defender, said he would be surprised if Nifong went ahead with the case unless "they really have something significant that they are not revealing to us" - such as a lacrosse player willing to testify he saw a rape.

"There has got to be some really good prosecution explanation as to why the DNA evidence does not exist and why someone else's would be there," Goldman said.

Cheshire said the fact that the players turned over the fingernail shows they had nothing to hide.

"Is that consistent with someone that knowledgeably and knowingly committed a rape?" Cheshire said. "That they would leave fingernails that were ripped off a person in a violent struggle in their trash can after they're told there's an investigation and that police were going to come to their house, and when the police do, they give them the fingernails?"

According to a search warrant executed on March 16, police recovered five fingernails from the house, but it was unclear where those fingernails were found or whether they included the one containing DNA.

"Let's wait and see the fingernails and see if they match up to the way she describes the attack took place," Cheshire said.

Nifong has said he hoped to charge a third person, and he could do so as early as Monday at the next meeting of the Durham County grand jury.

"I'm not going to comment on whether I think it'll be my client or not," Cheshire said. "I hope it is none. It'll simply be accusing another innocent person."

The "single male source" who matched the genetic material found on the vaginal swab take from the victim is named in the report on the second round of DNA tests, which were done at a private lab. Cheshire said the man "is known to the Durham police department" but he declined to give the man's name or comment on his relationship with the accuser.

"There is no indication that this man should have his name dragged through the mud," he said.