Fig. 4From: Ingestion of bivalve droppings by benthic invertebrates may lead to the transfer of nanomaterials in the aquatic food chainFM pictures (flourescence channel) of H. azteca sampled from the nPS bioavailability tests. a After 24 h of aqueous exposure, b after 24 h of dietary exposure (the red mark shows the gut area), c after 24 h of depuration after aqueous exposure, d after 24 h of depuration after dietary exposure. The amphipods had a length of around 30 mmBack to article page