 She would encounter opposition to her career as both a student and a professional by conservatives; objections included the broader concept of allowing women to pursue a career, as well as more petty ones such as that a woman should not examine a cadaver.These experiences led Lanteri and Dr. Cecilia Grierson (the first woman to earn a Medical Degree in Argentina) to co-found "Asociación de Universitarias Argentinas", the first university student association for women in the country, in 1904.Following an internship at the women's ward at San Roque Hospital, Lanteri became, in 1907, only the fifth woman in Argentina to earn a Medical Degree, and the first Italian Argentine woman to do so.