Aggregation association
Biology or cell biology speaks of an aggregation association when individual cells assemble into associations without losing their individuality .
Occurrence
This is often the case with green algae , slime molds and amoebas .
With the accumulation and coexistence of bacteria , there is also symbiosis and fruiting body formation (myxobacteria), or star and net-like forms.
Emergence
The aggregation can occur through active migration of single cells or through passive collision and sticking together of cells and cell clumps in suspension cultures ( cell adhesion ).