The extracellular genesis of cells in animals seemed to…
““The extracellular genesis of cells in animals seemed to me, ever since the publication of the cell theory [of Schwann], just as unlikely as the spontaneous generation of organisms. These doubts produced my observations on the multiplication of blood cells by division in bird and mammalian embryos and on the division of muscle bundles in frog larvae. Since then I have continued these observations in frog larvae, where it is possible to follow the history of tissues back to segmentation.””
About This Quote
This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.
Describes skepticism about extracellular cell origins, leading to observations on cell division in embryos, supporting cell theory.
In simple terms: Observations support cell division as origin of cells.
Study embryonic cell division.
Themes
Mood
Type
When to use this quote
- research labs
- academic teaching
- medical studies
- evolutionary biology
- science communication
Key Concepts
Questions to Reflect On
- What evidence supports cellular origins?
- How does embryology inform current biology?
May lack modern molecular evidence.