Effect of Chronic Morphine Consumption on Synaptic Plasticity of Rat’s Hippocampus: A Transmission Electron Microscopy Study

Table 1

Changes in synaptic number in the morphine treated group.

Groups	Synaptic density per; 1×𝜇m^3	95% confidence interval	𝑃 value
Morphine	1.85	2.0930–1.6069	𝑃 < 0.0001
Placebo (sucrose)	0.8	0.9293–0.6706
Control	0.67	0.8209–0.5910