epidermis. stratum spinosum. desmosomes

adherens biological biology cell cytological cytology dermis desmosome epidermis epithelial epithelium gland hematoxylin hematoxylineosin histological histology human junction keratin keratinocytes layer macula mallory micrograph microscope microscopic microscopy paraffin phosphotungstic photomicrograph section skin spinosum spinous squamous stratified stratum tissue