552,263 HE QIUSHUI Diagnosis of Bordetella pertussis infection and investigation of pertussis immunity by PCR and EIA serology ; [thesis] / by Qiushi He ; from the National Public Health Institute, Department in Turku, and the Departments of Hecical Microbiology and Pediatrics, University of Turku, Turku, Finland. - Turku s [Turun Yliopisto], 1994. - 75, [41] s. : il., wykr. ; 25 cm (Annales Universitatis Turkuensis. Ser. D t Medi-ca-Odontologica, ISSN 0355-9483 , 145) Zawiera 5 prac wsp61aut.