Not exactly the same pattern of positivity as seen in rat/mouse I of Ls

Astrocyte positivity

Identical myoepthilium positivty as 905303 but additional single cells in stroma are +ve ( red arrowheads). this site is at the margin of a mouse mamary tumour. Are these invasive tumour cells? If yes, why is 905303 not +ve for these cells also? If not, is this a non-specific interaction?

Strong positivity in macrophages ( Hofbauer cells) in chorionic villi (red arrowheads). Green arrowsheads indicate a moderate positivity within trophoblasts