by students, graduates, and associated researchers. Production and scientific publications According to the annual balance prepared by the National Council of Science, Technology and Technological Innovation (CONCYTEC) of Peru in 2009, 20% of Peruvian scientific production was generated by the National University of San Marcos, which makes it the Peruvian institution with the highest scientific production in all lines of activity. In the same way, according to the Ibero-American Ranking of research institutions —prepared by SCImago research group—, the University of San Marcos is positioned in Peru as the main public university in research activity and scientific publications. Several scientific publications of the University of San Marcos and its research institutes appear in prestigious popular science magazines, such as the journals Nature and Science. Among the most relevant research topics published in the last decades, the investigations that have been carried out in the citadel of Caral, medical investigations on diabetes, and the discoveries of the fossil of the prehistoric giant cetacean stand out: Livyatan melvillei, of the prehistoric giant penguin: Inkayacu paracasensis, and the first Plesiosaur fossil located in Peruvian territory. The following is the number of scientific publications of the University of San Marcos from 1990 to 2019 (the most recent year of data published and considered by the 2021 edition of the SCImago Institutions Rankings): The main scientific publications of the University of San Marcos are published in academic journals Alma Máter —humanities, social sciences, and business sciences— and Theorema —basic sciences, health sciences, and engineering— and in the 20 official magazines of each of the university's faculties, which are listed below. In addition to the magazines listed below, each professional school also has its own academic journal: Below is a brief description of the main academic publications of the faculties of the University of San Marcos, listed above: Anales de la Facultad de Medicina: It is the main official publication of the "San Fernando" Faculty of Medicine for the dissemination of education, research, and issues related to medicine, medical practice, university medical teaching and the improvement of public health. Ciencia e Investigación: It is a publication of the Research Institute of the Faculty of Pharmacy and Biochemistry. It is responsible for publishing original and unpublished scientific articles in the field of pharmaceutical and biomedical sciences. Odontología Sanmarquina: It is a publication of the Research Institute of the Faculty of Pharmacy and Biochemistry. It is responsible for