[A method for determining the formal boundary of the hematocellular interaction zone].

A method of standard marking of the boundaries of hematocellular interaction zone is proposed. It is intended for identification of most effective transport zone of hematocellular conjugation. The main point of the method is to find minimal zone of the investigated hematocellular interface, the expansion of which will be accompanied by an increment of the perimicrovascular interstitium mean thickness. To verify the method applicability, a stereometric study is carried out on hematocellular barrier formed by thyroid C-cells and perifollicular hemocapillaries. The proposed method has a negligible error and provides accurate ultrastructurometry of blood-cell barriers.