c.tissue - the epithelium is a kind of tissue that makes up several organs in the body.
The first thing you'd have to do is see experts/professionals. If not, you'd have to search up your symptoms of your disease on trusted sources.
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you are a great man but I'm afraid that if you're going back home
First off, if you are able you should purchase health insurance. Health care is very expensive. In some situations it could take a huge toll on your financial situation. If you are unable to purchase private insurance or insurance through your employer you should look into state (Medicaid) insurance program that helps with healthcare costs for people with limited income and resources. Not having health insurance could take a toll on your financial situation, in case of medical emergency or an accident, in my opinion, purchasing health insurance should be collaborative family decision as it would affect your entire family.