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REGENERATION (Organisms capable of regen? (Amphibians (Urodele (newts)…
REGENERATION
Organisms capable of regen?
Flatworm
Hydra
Insects
Crabs
Teleosts (bony fish0
Amphibians
Anuran (frogs)
Urodele (newts)
EPIMORPHIC
Some mammals
Deer
Antlers
Mouse
Fingertips
MRL GMO mouse
Regenerates some organs
How cells know what to reform
Retinoic acid
Binds to receptor
Act as a transcription factor
Turns on expression of target genes
Proven:
using beta blocker
By artificially creating a receptor that is activated by a different ligand
DP axis
Meis
Prod1
Blastema origin
Cells at site de-differentiate
Epimorphic
Totipotent
Requires Msx1 gene
Stem cell based
Multipotent
Process:
Formation of BLASTEMA
Stem cell mass
LO's: