TY - RPRT TI - Intercellular spaces between macula densa cells: an ultrastructural study comparing high pressure perfusion fixation with in situ drip-fixation of rat kidney. AU - A Messina AU - D Alcorn AU - G B Ryan PY - 1987 DO - 10.1007/bf00219092 UR - https://pubmed.ncbi.nlm.nih.gov/3427614/ ID - 3427614 ER -