These sequences were filmed in the 1940s.
Individual amoeba migrate on an auger plate.
In a chemotactic response to starvation,
individual amoeba migrate to form large aggregates.
In this aggregation response,
the cells will form moving streams.
A low power view of a large aggregation response.
The aggregate forms a crawling slug or pseudoplasmodium.
The slime trail it leaves during migration is easily seen.
A large pseudoplasmodium splits.
When the pseudoplasmodium ceases migration,
it differentiates into a fruiting body in a process called culmination.
The anterior cells of the pseudoplasmodium will form the stalk.
The more posterior cells differentiate into spore cells.
In this experiment,
an individual pseudoplasmodium was cut into 3 parts.
Each fragment rearranges and differentiates into a complete fruiting body.