drawings of some cells:(a)an osteocyte (bone cell), (b)a sperm, (c)a pancreatic and (d)a neuron...

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Drawings of some cells:(a)an osteocyte (bone cell), (b)a sperm, (c)a pancreatic and (d)a neuron (nerve cell)

A schematic diagram of an animal cell accompanied by electron micrographs of its organelles

Figure 4

A drawing of a plant cell accompanied by electron micrographs of its organelles.

Scale drawings of some prokaryotic cells

A schematic diagram of a prokaryotic cell

An evolutionary tree indicating the lines of cellular life on earth

受精卵 全能細胞

多功能幹細胞胚胎

嬰兒

Gearhart 博士所提取之原始生殖細胞

實驗室培養多功能幹細胞

Thomson 博士所提取之多功能幹細胞

全能細胞

多功能幹細胞

血液幹細胞

其他幹細胞

紅血球 白血球 血小板