The Triangle life science sector is under attack by New York and Los Angeles – sort of.

In the latest Life Sciences Cluster report, put out by commercial real estate firm Jones Lang LaSalle, the Raleigh-Durham metro, once again, ranks fourth behind Boston, San Francisco and San Diego.

But New York and Los Angeles metros are catch up, each rising two lots to fill 5th and 6th place, respectively.

The Triangle, home to life science titans such as GlaxoSmithKline (NYSE: GSK) and United Therapeutics…