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Ectocrine (pheromones), Endocrine (hormones), Paracrine (within a tissue or collection of cells), Autocrine (reflexive; can also affect nearby cells as in Paracrine).
Are all human bones the same size?
by Answerbag Staff on April 8th, 2010
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how did you break a bone?
by jjones656 on August 15th, 2011
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What is the longest and strongest bone in the body?
by Answerbag Staff on January 22nd, 2010
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What is the logical nickname for one end of the humerus?
by mama 'oh yeaaaah' cass on August 17th, 2011
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Why didn't my Orthopedist give me knee braces for my knock knees?
by alyssa on September 29th, 2011
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