Scottish company, PPL Therapeutics, announced yesterday that its scientists had cloned a pig, creating five identical piglets. The goal, PPL said, is to use the technology to create genetically altered pigs whose organs can be transplanted into humans without being rejected by the human immune system. PPL provided no details of how the cloning was done or even how many efforts were needed to succeed. Instead, the company issued a news release announcing that a pig had been cloned.