TY - RPRT TI - Chemotaxis under agarose: dependence upon polymorphonuclear leukocyte density. AU - T M Schaack AU - R H Persellin PY - 1981 DO - 10.1016/0022-1759(81)90292-1 UR - https://pubmed.ncbi.nlm.nih.gov/7037970/ ID - 7037970 ER -