Srivastava discovered that three, possibly four, types of HSP go further, prompting immune cells to attack cancerous cells.

FORBES: In search of antigens

At the closing bell, URI is up about 1.9%, while HSP is up about 0.5% on the day Tuesday.

FORBES: United Rentals Larger Than S&P 500 Component Hospira

Hospira (HSP) reports its fourth quarter earnings on Wednesday, February 13, 2013.

FORBES: Earnings Preview: Hospira

Wall Street is expecting lower profit for Hospira (HSP) when the company reports its third quarter results on Wednesday, November 7, 2012.

FORBES: Hospira

Hospira ( HSP) operated as the hospital products business of Abbott Laboratories until it was spun off into a stand-alone entity in 2004.

FORBES: Patient Investors Will Find The Right Prescription In Hospira

Analysts are looking for decreased profit for Hospira (HSP) when the company reports its results for the second quarter on Wednesday, August 1, 2012.

FORBES: Hospira

Antigenics focuses on a class of chaperones known as heat-shock proteins (HSP), first studied in this regard by Pramod Srivastava, a cofounder of Antigenics and a cancer specialist at the University of Connecticut School of Medicine, in Farmington.

FORBES: In search of antigens