[Device for simultaneous bilateral stretching of biological objects without displacing the site under study]

A mechanical device is offered for stretching biological objects by 2--6 mm. This is set on the microscope stage and allows simultaneous and independent stretching to the opposite sides, keeping the fixed position of any definite object point. The device and principles of operation are described taking for ellustration experiments with the crayfish receptor that involved an intercellular registration of electrical parametres of the mechanoreceptor neuron under adequate stimulation.