Munro's microabscess
Munro's microabscess is an abscess ( collection of neutrophils ) in the stratum corneum of the epidermis due to the infiltration of neutrophils from papillary dermis into the epidermal stratum corneum . 
<triplet> stratum corneum <subj> epidermis <obj> part of <triplet> epidermis <subj> stratum corneum <obj> has part