<prompt> Spongiosis involves:Stratum granulosumStratum corneumStratum spinosumStratum basale  <response>: Spongiosis :extracellular accumulation of fluid in stratum spinosum. Eg: Acute eczema Ballooning: intracellular accumulation of fluid in stratum spinosum.Eg: Acute eczema Acanthosis :thickening of stratum spinosum. Eg: Chronic eczema 