Here are histology images of gills kept at room temperature (21°C) for 0 (fresh gill), 10 or 15 minutes postmortem. Images show changes in gill over time in random order.
Sort images in order of increasing time.
Write the answer down using letters from each image separated by commas.
TIPS:
1. Asterisk (*) shows separation of the gill filament.
2. Black arrows show epithelial lifting leading to development of extracellular spaces.
