“…Although there are several studies on the contamination of biotic and abiotic elements by toxic metals in Santo Amaro (Carvalho et al, 1984;Costa et al, 2019;FUNASA, 2003;Hatje et al, 2006Hatje et al, , 2010Hatje and Andrade, 2009;Macedo et al, 2016;Muñoz Magna et al, 2013;Santos and Anjos, 2022), few tried to demonstrate potential biological effects caused by these contaminants (Batista et al, 2017;Carvalho et al, 1987;Pinheiro et al, 2023). Therefore, the present study aims to analyze possible chromosomal degradations in chickens (Gallus gallus domesticus) reared in an area potentially impacted by heavy metals and its associations with serum lead concentrations.…”