noun retÂ·roÂ·gresÂ·sion \Ëre-trÉ-Ëgresh-Én\. : a reversal in development or condition: asa: return to a former and less complex level of development or organizationb: subsidence or decline of symptoms or manifestations of a disease.
Habitat. Slime molds live in somewhat variable habitats all over the world. Generally slime molds live in damp areas of vegetation. They live under rotting logs and damp leaves. Some of the other habitats that slime molds will inhabit include water such as tropical fish tanks.
The cellular slime mold Dictyostelium discoideum grows as single-celled, mononucleated amoebae. When starved, the amoebae initiate a multicellular developmental program that results in the production of a mature fruiting body comprised of a stalk with a mass of spores on top. Approximately 4 hrs after removal or exhaustion of the food source, cells within the population produce and secrete extracellular cAMP.