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2014-06-23T16:15:17+08:00

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There are 4 kinds of tissues: muscle tissue, nerve tissue, epithelial tissue and connective tissue. 
Organs: brain, heart, kidney, liver, eye, skin, stomach, lungs and more.
Body systems: muscular system, endocrine system, digestive system, circulatory system, urinary system, respiratory system, integumentary system, lymphatic system, immune system, nervous system, reproductive system, skeletal system.

I hope it's helpful :)
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