Digital Histology
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Stratum basale

This electron micrograph shows the stratum basale, consisting of a single layer of columnar cells.  The basal surfaces of these keratinocytes are highly folded for anchorage to the basal lamina.  The cells contain tonofibrils composed of tonofilaments (keratin filaments), which are mostly oriented perpendicular to the basal lamina.  4000x

Stratum basale <p>This electron micrograph shows the stratum basale, consisting of a single layer of columnar cells.  The basal surfaces of these keratinocytes are highly folded for anchorage to the basal lamina.  The cells contain tonofibrils composed of tonofilaments (keratin filaments), which are mostly oriented perpendicular to the basal lamina.  4000x</p>

Stratum basale

This electron micrograph shows the stratum basale, consisting of a single layer of columnar cells.  The basal surfaces of these keratinocytes are highly folded for anchorage to the basal lamina.  The cells contain tonofibrils composed of tonofilaments (keratin filaments), which are mostly oriented perpendicular to the basal lamina.  4000x
- Melansomes <p>This electron micrograph shows the stratum basale, consisting of a single layer of columnar cells.  The basal surfaces of these keratinocytes are highly folded for anchorage to the basal lamina.  The cells contain tonofibrils composed of tonofilaments (keratin filaments), which are mostly oriented perpendicular to the basal lamina.  4000x</p>

- Melansomes

This electron micrograph shows the stratum basale, consisting of a single layer of columnar cells.  The basal surfaces of these keratinocytes are highly folded for anchorage to the basal lamina.  The cells contain tonofibrils composed of tonofilaments (keratin filaments), which are mostly oriented perpendicular to the basal lamina.  4000x
- Tonofibrils <p>This electron micrograph shows the stratum basale, consisting of a single layer of columnar cells.  The basal surfaces of these keratinocytes are highly folded for anchorage to the basal lamina.  The cells contain tonofibrils composed of tonofilaments (keratin filaments), which are mostly oriented perpendicular to the basal lamina.  4000x</p>

- Tonofibrils

This electron micrograph shows the stratum basale, consisting of a single layer of columnar cells.  The basal surfaces of these keratinocytes are highly folded for anchorage to the basal lamina.  The cells contain tonofibrils composed of tonofilaments (keratin filaments), which are mostly oriented perpendicular to the basal lamina.  4000x
Stratum spinosum <p>This electron micrograph shows the stratum basale, consisting of a single layer of columnar cells.  The basal surfaces of these keratinocytes are highly folded for anchorage to the basal lamina.  The cells contain tonofibrils composed of tonofilaments (keratin filaments), which are mostly oriented perpendicular to the basal lamina.  4000x</p>

Stratum spinosum

This electron micrograph shows the stratum basale, consisting of a single layer of columnar cells.  The basal surfaces of these keratinocytes are highly folded for anchorage to the basal lamina.  The cells contain tonofibrils composed of tonofilaments (keratin filaments), which are mostly oriented perpendicular to the basal lamina.  4000x
Papillary layer of dermis <p>This electron micrograph shows the stratum basale, consisting of a single layer of columnar cells.  The basal surfaces of these keratinocytes are highly folded for anchorage to the basal lamina.  The cells contain tonofibrils composed of tonofilaments (keratin filaments), which are mostly oriented perpendicular to the basal lamina.  4000x</p>

Papillary layer of dermis

This electron micrograph shows the stratum basale, consisting of a single layer of columnar cells.  The basal surfaces of these keratinocytes are highly folded for anchorage to the basal lamina.  The cells contain tonofibrils composed of tonofilaments (keratin filaments), which are mostly oriented perpendicular to the basal lamina.  4000x
Main SlideStratum basale - Melansomes - TonofibrilsStratum spinosumPapillary layer of dermis