This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Pathology
In case of non-hemorrhagic infarct in cerebral coex, reactive astrocytes can be seen as early as ________ after the insult. 
Select and explain. 
A. 1 hr, B. 1 day, C. 1 week, D. 1 month
C: 1 week
Answer: C: 1 week 
Explanation: Reactive astrocytes Can be seen as early as 1 week after the insult. As the process of liquefaction and phagocytosis proceeds, astrocytes at the edges of the lesion progressively enlarge, divide, and develop a prominent network of cytoplasmic extensions.