Stroke (which is a cerebral embolism, or cerebral vascular accident) is characterized by damage to a part of the brain (which could for example the sensory cortex) as a result of obstruction of a vessel (ischemic stroke or cerebral infarction) or by the rupture of a blood vessel and the accumulation of a pocket of blood (hemorrhagic accident or cerebral hemorrhage).
The sensory and visual symptoms of the stroke appear 48 hours after the incident, Doctors must act quickly to save the patient from irreversible damages.</span>
<span>B. A prokaryotic cell does not have nucleus and the other one does. The most defining characteristic of eukaryotic cells is their true nucleus. Prokaryotes lack true nucleus</span> and membrane bound organelles.
