Karen Dhanowa and Nilima Amin allege that Subway stores across California do not take enough care to protect their tuna supply chain. Nineteen of the 20 samples contained вЂњno detectable tuna DNA sequences whatsoever,вЂќ the lab found, according to the lawsuit. The latest version, filed on Monday, said the two collected 20 tuna samples from 20 Subway restaurants in southern California and submitted them for testing at the Barber Lab at UCLAвЂ™s Department of Ecology and Evolutionary Biology. ItвЂ™s the third amended lawsuit filed against Subway this year by Karen Dhanowa and Nilima Amin in the federal court in San Francisco, near their homes in Alameda County. Lab tests reportedly find no identifiable tuna DNA in Subway sandwich - againДЄn amended lawsuit accusing Subway of duping the public about its tuna sandwiches now claims that the alleged mystery meat actually contains trace amounts of chicken, pork and cattle DNA, according to new lab tests. Subway adds 20 new menu items - but keeps the вЂpremium 100% tunaвЂ™ вЂItвЂ™s 100% tunaвЂ™: Subway CEO backs sandwiches, says lab results were fishy

Big Apple blues: Why NYC fishermen are catching вЂmonsterвЂ™ 600-pound tuna

Inside edition subway tuna