Question: Which university is Switzerland's oldest university and has Jean Pieters as a professor?

Context paragraphs:
Third-oldest university in England debate: The title of third-oldest university in England is claimed by three institutions: Durham University as the third oldest officially recognised university (1832) and the third to confer degrees (1837), the University of London as the third university to be granted a Royal Charter (1836), and University College London as it was founded as "London University" (1826) and was the third oldest university institution to start teaching (1828).  A fourth institution, King's College London, officially claims to be the fourth oldest university in England but is claimed by some students to be the third oldest as the third university institution to receive a Royal Charter (1829).  Deciding which is truly the "third oldest university" depends largely on the definition of university status and how this is applied historically.

David Serwadda: Professor David M. Serwadda, MBChB, MMed, MSc, MPH, is a Ugandan physician, medical researcher, academic, public health specialist and medical administrator.  Currently he is a Professor of Public Health at Makerere University School of Public Health (MUSPH), one of the schools of Makerere University College of Health Sciences, a semi-autonomous constituent college of Makerere University, the oldest university in Uganda.  Serwadda is also a founding member of "Accordia Global Health Foundation’s Academic Alliance

Jean Pieters: Jean Pieters is a Dutch biochemist and Professor at the Biozentrum of the University of Basel, Switzerland.

Jagiellonian University Medical College: Jagiellonian University is the oldest institution of higher education in Poland.  Established in 1364 by King Casimir III the Great, it is the second oldest university in Central-Eastern Europe, preceded by the University of Prague which was founded in 1348.  Called Studium Generale in its early years, it was modeled after the Universities of Bologna and Padua and was initially composed of three faculties: Liberal Arts, Medicine, and Law.  After its restoration in 1400, changes to the Academy's statute made it more resemble the Paris Sorbonne.  For over 600 years, many famous Poles and Europeans received their education within the walls of this University.  It was here that Nicolaus Copernicus studied and in 1578 Walenty Fontana delivered the first academic lecture based on Copernicus' heliocentric theory, an inconceivable notion to many scholars at the time.  In 1938, Karol Wojtyła began his studies in Polish philology at Jagiellonian University, interrupted by the outbreak of World War II, when occupying forces closed the University.  During the War, he actively participated in classes organized by the underground university.  Upon taking Holy Orders and returning from his doctoral studies in Rome, he received his post-doctoral degree from Jagiellonian University in 1953, continuing to work at the University until 1954.  In 1983, already as Pope, he was honored by University authorities with an Honorary Doctorate.

National University of Córdoba: The National University of Córdoba (Spanish: "Universidad Nacional de Córdoba" , UNC), founded in 1613, is the oldest university in Argentina, the fourth oldest in South America and the sixth oldest in Latin America.  It is located in Córdoba, the capital of Córdoba Province.  Since the early 20th century it has been the second largest university in the country (after the University of Buenos Aires) in terms of the number of students, faculty, and academic programs.  As the location of the first university founded in the land that is now Argentina, Córdoba has earned the nickname La Docta (roughly translated, "The Wise").

University of Basel: The University of Basel (German: "Universität Basel") is located in Basel, Switzerland.  Founded on 4 April 1460, it is Switzerland’s oldest university and is counted among the leading institutions of the country.

University of Catania: The University of Catania (Italian: "Università degli Studi di Catania" ) is a university located in Catania, Sicily.  Founded in 1434, it is the oldest university in Sicily, the 13th oldest in Italy, and the 29th oldest university in the world.  With a population of over 60,000 students, it is the main university in Sicily.

List of presidents of Transylvania University: The President of Transylvania University is the headmaster of the oldest university in Kentucky, founded in 1780, making it the 16th oldest university in the United States.  The President is appointed by the Board of Trustees.  The President oversees both administrative and academic standards of the university, and is responsible for facilitating student life and achievement.

University of Cape Town: The University of Cape Town (UCT) is a public research university located in Cape Town in the Western Cape province of South Africa.  UCT was founded in 1829 as the South African College making it the oldest higher education institute in South Africa, it is jointly the oldest university in South Africa and the oldest extant university in Sub-Saharan Africa alongside Stellenbosch University which received full university status on the same day in 1918.  UCT is the highest-ranked African university in the QS World University Rankings, the Times Higher Education World University Rankings, and the Academic Ranking of World Universities, and its Law and Commerce Faculties are consistently placed among the hundred best internationally.  The language of instruction is English.

Rhodes University: Rhodes University is a public research university located in Grahamstown in the Eastern Cape Province of South Africa.  It is one of four universities in the province.  Established in 1904, Rhodes University is the province's oldest university, and it is the fifth or sixth oldest South African university in continuous operation, being preceded by the University of the Free State (1904), University of Witwatersrand (1896), Stellenbosch University (1866) and the University of Cape Town (1829).  Rhodes was founded in 1904 as Rhodes University College, named after Cecil Rhodes, through a grant from the Rhodes Trust.  It became a constituent college of the University of South Africa in 1918 before becoming an independent university in 1951.

Supporting paragraphs: Jean Pieters University of Basel
Answer: The University of Basel