In 2009 , a new kind of Infrared Fluorescent Protein ( IFP ) was developed by Tsien 's group .
In 2009 , a new kind of Infrared Fluorescent Protein ( IFP ) was further reported and described by Science .
In 2009 , a new kind of Infrared Fluorescent Protein ( IFP ) was developed by Tsien 's group , and further reported and described by Science .