Crain, M. J., Waltman, W. D., Turner, J. S., Yother, J., Talkington, D. F., McDaniel, L. S., . . . Briles, D. E. (1990). Pneumococcal surface protein A (PspA) is serologically highly variable and is expressed by all clinically important capsular serotypes of Streptococcus pneumoniae.

Crain, M J., W D. Waltman, J S. Turner, J. Yother, D F. Talkington, L S. McDaniel, B M. Gray, and D E. Briles. Pneumococcal Surface Protein A (PspA) Is Serologically Highly Variable and Is Expressed By All Clinically Important Capsular Serotypes of Streptococcus Pneumoniae. 1990.

Crain, M J., et al. Pneumococcal Surface Protein A (PspA) Is Serologically Highly Variable and Is Expressed By All Clinically Important Capsular Serotypes of Streptococcus Pneumoniae. 1990.