Oesophageal mucosa is positive.

I recall that I used Citraconic acid as AR solution.

What appear to be osteoclasts ( bone remodelling) are positive.

Note the positive olfactory nerve fibres within the epithelium and the their tracks  in the underlying connective tissue.

Upper image ( anti EGFr ab32077: ab52894 gave the same result) shows occasional intensely positive cells ( this ab should be double-diluted to get rid of what seems to me to be non-specific staining).

However, when using the anti phospho-EGFr there are many more positive cells

Developing heart and lung show positivity in myocardium and  epithelium lining airway conduction tubes. Neither are positive when using ab32077 nor ab52894.

Intense positivity of lumenal enterocytes. This is not seen when using ab32077 nor ab52894