Reference for Zevachim 69:8

והא דם הוי חציצה לח הוא ולא הוי חציצה דתנן הדם והדיו והדבש והחלב יבישין חוצצין לחין אין חוצצין

But blood constitutes an interposition?<span class="x" onmousemove="('comment',' Between the pavement and their feet, whereas they had to stand actually on the pavement itself, supra 15b.');">¹²</span> - It was moist, and did not constitute an interposition.

Jastrow

Jastrow