Pharmacological inhibition of hematopoietic progenitor kinase 1 positively regulates T-cell function. oleh Yun Wang, Kelvin Zhang, Peter Georgiev, Steven Wells, Haiyan Xu, Brian M Lacey, Zangwei Xu, Jason Laskey, Robbie Mcleod, Joey L Methot, Mark Bittinger, Alexander Pasternak, Sheila Ranganath