Obective To investigate whether chromoendoscopy combining with examination of telomerase activity and DNA ploidy could increase the early diagnostic rate or reduce the pseudonegative and pseudopositive diagnostic rate of early esophageal carcinoma, and to establish practical methods.

The principle of selecting the dystuff in internal dying operation and the way of determining dying process were introduced in this paper.

The synaptic properties of classical receptive field (CRF) and integration field (IF) of cat's striate cortical neurons and their morphological features were investigated using the whole cell recording and intracellular staining techniques in vivo.