<prompt> Spongiosis involves-Stratum basalStratum corneumStratum granulosumStratum spinosum  <response>: Spongiosis is seen in intracellular in between keratinocytes edema. This results in loss of cohesion between epidermal cells which remain on contact with each other only at desmosomes and so acquire a stellate appearance giving the epidermis a sponge like appearance. Ref: Harrison20th edition pg 1208 