<p dir="ltr">Data from Perkins et al. <i>Microplastic ingestion by an aquatic ciliate: functional response, modulation, and reduced population growth. </i>These data are from a feeding experiment, exposing a model freshwater ciliate<i>, Tetrahymena pyriformis, </i>to six different microplastic concentrations. The file contains measured microplastic uptake and population growth over the course of several generations.</p>