Toxicity of Commercial Neem Extract to Earthworms (Pheretima peguana)

Figure 1

Earthworm transverse section showing the epidermis, body wall and intestinal epithelium stained with haematoxylin and eosin (×10). Nos. 1–6 show the regions where the radial thickness was measured. e: epidermis; b: body wall; i: intestinal epithelium; l: lumen; d: dorsal blood vessel.