title: Digenetic trematodes: quinone tanning system in eggshells.
mesh_terms: D000818:Animals; D001001:Anura; D001345:Autoradiography; D005075:Biological Evolution; D004156:Catechol Oxidase / Q000032:analysis; D002645:Chickens; D003513:Cycloheximide / Q000494:pharmacology; D005260:Female; D007633:Keratins / Q000032:analysis; D008543:Melanins / Q000032:analysis; D008722:Methods; D010063:Ovum / Q000032:analysis / Q000378:metabolism; D014176:Protein Biosynthesis; D011506:Proteins / Q000037:antagonists & inhibitors; D011809:Quinones / Q000032:analysis / Q000378:metabolism*; D013633:Tanning; D014200:Trematoda / Q000032:analysis / Q000201:enzymology / Q000378:metabolism*; D014443:Tyrosine / Q000378:metabolism
chemical_list: D008543:Melanins; D011506:Proteins; D011809:Quinones; D014443:Tyrosine; D007633:Keratins; D003513:Cycloheximide; D004156:Catechol Oxidase