histology slide
 

Im having trouble distinguishing between tissue damage in a lung sample and the alveoli, i have attached a photo, it isnt great perhaps, but so far its the only one i have at the moment. If any one have any ideas, whether its tissue damage (from parasites perhaps?, which is what im investigating) or whether its alveoli etc. I have looked at some histology books, but the selection i have is all human books, where as my samples are of hedgehogs.

If any one has any ideas, it would be greatly appreciated!
Thanks!