Mariana Feijó has a Bachelor's and a Master's degree in Biomedical Sciences and, more recently, a Master's degree in Biochemistry, all from the University of Beira Interior (Covilhã, Portugal). Her main research interests are focused on the impact of environmental endocrine disruptors on male reproductive tissues, namely on their carcinogenic potential and actions linked to fertility impairment. In the last years, her knowledge and practical skills in immunology have also been deepened. At the present moment, Mariana has 2 papers (one as first author) and 3 abstracts (two as first author) published in highly recognized Q1 journals in the field of oncology, reproductive biology and multidisciplinary sciences. Also, she has been actively participating in national and international scientific events, in which original research results were presented (25 posters; 7 as the first author). The results of Mariana's research awarded the best communication prizes and the "Prémio Professor Alexandre Moreira" from the Portuguese Society of Andrology and, more recently, the "Bolsa de Investigação em Urologia 2022" from the Portuguese Society of Urology. She participated as a team member in 6 research projects, supervised 5 BSc final projects, co-supervised 4 MSc dissertations, trained young researchers in laboratory techniques, and collaborated in the organization of 5 scientific events. Considering lab work experience, Mariana has strong skills in cell culture (immortalized cell lines - GC-6spg, PNT1A, LNCaP, and PC3 cells - and rat and human primary cultures), cell viability assays (MTT, Annexin V, and 7-AAD), immunocytochemistry, RNA extraction, cDNA synthesis, conventional PCR, protein extraction and quantification, Western Blot analysis, quantification of extracellular metabolites, measurement of enzymatic activity, isolation of peripheral blood mononuclear cells, magnetic beads-based cell isolation, ELISA assays, and flow cytometry. Also, she is experienced in microbiology, immunochemistry, and hematology routine techniques of a clinical pathology laboratory.