Carmen Romero-Bachiller is Tenured Associate Professor at the Department of Sociology: Methods and Theory, Universidad Complutense de Madrid. Her main research interests are bodies and practices as products of relational materiality, considering vulnerabilities and privileges from a STS/feminist and queer intersectional perspective. She is currently working on health activism reconstructions of biomedical knowledge and practices in human breast milk donation and in problems during the breastfeeding process such as mastitis.|(S.) García-Dauder is Tenured Associate Professor of Social Psychology at the Rey Juan Carlos University of Madrid (Spain). Its main research interests include the psychomedical regulation of sexed bodies and the violence of sex/gender dualisms. S/he is the author of Psicología y Feminismo (2005, Narcea) and Las mentiras científicas sobre las mujeres (2017, Catarata).|Pablo Santoro is Associate Professor at the Department of Sociology: Methods and Theory, Universidad Complutense de Madrid and was previously a visiting post-doc scholar at SATSU (University of York). His research interests include topics related to the sociology of the biosciences and the anthropology of the body (HIV, biobanking, health activism) as well as cultural studies and cultural sociology.