A Simple Micro‐cinematographic System

Abstract

During micro-cinemalographic observation of iiianinial ian cclls it is usually significant to keep temperature constant, since variation will influcncc synthetic aclivity in the cclls examincd. A variety of microcinematographic sysleiiis havc hecn constructed for this purpose (1) of which most arc rather complicalcd and expensive. The systems on rccord ( 1 ) appear all to have bcen based on incubators surrounding the microscopc more or less complelcly. Most such arrangenienls arc spacc consuming and difficult lo opcrale making the microscopc useless for other purposes. Tcnipcraturc recordings lcnd to be incorrect if made in thc incubator and not in the cell chanibcr ilsclf and conscqucnlly i t is not feasible Lo measure changes in the chamhcr tcmpcralurc e.g. during cxposurc to transmilted light. As this communication reports, this may cause scrious disadvantages.