cl cells

McCormick Laboratory
Fish Physiology

University of Massachusetts, Amherst

Metamorphic juvenile sea lamprey and their chloride cells (red)

Metamorphic juvenile sea lamprey and their chloride cells (stained red with an antibody for Na+,K+-ATPase) that are responsible for the development of seawater tolerance. 

Photo by Jonathan Wilson (Journal of Experimental Biology 211: 978-988)