part of part of immediately deep to immediately superficial to composed primarily of keratinocyte skin epidermis stratum corneum of epidermis stratum granulosum of epidermis stratum lucidum of epidermis UBERON:0002071 MA:0000806 epidermis stratum lucidum UMLS:C0221922 EMAPA:35314 BTO:0000364 NCIT:C33624 Located between the stratum granulosum and stratum corneum layers, it is composed of three to five layers of dead, flattened keratinocytes. The keratinocytes of the stratum lucidum do not feature distinct boundaries and are filled with eleidin, an intermediate form of keratin. SCTID:419156002 NCIT:C33629 stratum conjunctum of epidermis UMLS:C1514985 neuronames:1777 stratum lucidum FMA:70540 The layer of lightly staining corneocytes found between the stratum granulosum and stratum corneum layers; found primarily in the thick epidermis of the palmar and plantar skin and is composed of three to five layers of dead, flattened keratinocytes. Wikipedia:Stratum_lucidum integumentary system layer