لا توجد دقة أعلى متوفرة.
Cell_differentiation.gif (460 × 432 بكسل، حجم الملف: 59 كيلوبايت، نوع الملف: image/gif)
From NCBI, a US government source, so public domain. Copyright info is here. The site is this.
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This work is in the public domain in the United States because it is a work of the United States Federal Government under the terms of Title 17, Chapter 1, Section 105 of the US Code. See Copyright.
Note: This only applies to works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. | | | | | | | | | | | | | | | +/- |
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(from http://en.wikipedia.org/w/index.php?title=Image:Cell_differentiation.gif)
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