green spots in apples

I have an apple tree that produces tart green (some blush) 2-4 inch apples. The tree is loaded and apples are falling. When I started picking I noticed that there are green spots embedded in the flesh of the apple. They can be found from the skin to the core. The first time I saw this I thought unripe apples are really green and tossed them. Now its a month later and the green spots are still there. I tried one and the apple seems ripe and starting to get soft.
Is this normal? Can I juice or eat them?
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Where are placed the green spots? For example are at the bottom of the apple? Are there really green, or ...maybe bluish?
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On Sep 6, 8:01 am, news-search <news-

The spots are evenly distributed throughout the apple. The ones I found earlier were mostly green. The most recent less than 10 percent, in a vertical pattern. The spots are definitely apple green.
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