Science Source December 1, 2009 DVD

Patient with geographic tongue.

Infectious mononucleosis - pharyngeal inflammation and petechiae.

Infectious mononucleosis - pharyngeal inflammation and petechiae.

Man with gynecomastia, which is the excessive development of mammary glands in males.

Light micrograph of human skeletal muscle.

Light micrograph of human skeletal muscle, showing nuclei and a capillary.

Light micrograph of fetal muscle showing rhabdomyoblasts fusing to form muscle fibers. in embryogenesis, skeletal muscles develop from mesenchymal tis...

Light micrograph of muscle fibers at birth, which are small with many nuclei.

Light micrograph of a transverse section of a muscle spindle, showing a fibrocollagenous capsule and its content of muscle fibers and spiral nerve end...

Light micrograph of a transverse section of a muscle spindle, showing a fibrocollagenous capsule and its content of muscle fibers and spiral nerve end...

Light micrograph of a longitudinal section of a muscle spindle among fibers. Magnification: 350x.

Active bone marrow appears red in this light micrograph of spongy (cancellous) bone from a young child. An artery is visible to the right, passing thr...

Light micrograph of the epiphyseal growth plate, a plate of hyaline cartilages at the junction of the diaphysis and epiphysis that provides for growth...

Light micrograph of the epiphyseal growth plate, a plate of hyaline cartilages at the junction of the diaphysis and epiphysis that provides for growth...

Light micrograph of the epiphyseal growth plate, a plate of hyaline cartilages at the junction of the diaphysis and epiphysis that provides for growth...

Light micrograph of the epiphyseal growth plate, a plate of hyaline cartilages at the junction of the diaphysis and epiphysis that provides for growth...

Light micrograph of synovium, a specialized but weak connective tissue layer only a few cells thick which lines the joint space.

Light micrograph of articular cartilage. Articular cartilage differs from other hyaline cartilage in having no perichondrium covering the surface and...

Light micrograph of articular cartilage. Articular cartilage differs from other hyaline cartilage in having no perichondrium covering the surface and...

Invertebral disc showing concentric layers of fibrocartilage around a central nucleus polpusus.

Invertebral disc showing concentric layers of fibrocartilage around a central nucleus polpusus. This is the only remnant of the embryonic notochord pe...

Invertebral disc showing concentric layers of fibrocartilage around a central nucleus polpuses. This is the only remnant of the embryonic notochord pe...

Light micrograph of a longitudinal section of a mature periosteum showing osteoprogenitor cells on the upper layer. There are green-stained bundles of...

Active bone marrow appears red in this light micrograph of spongy (cancellous) bone from a young child. Bone marrow fills the intrabecular spaces of a...

Active bone marrow appears red in this light micrograph of spongy (cancellous) bone from a young child. Also visible are active hemopoietic tissue and...

All cellular elements in blood are derived from stem cells, shown in this light micrograph among active bone marrow (red) in cancellous bone from a yo...

Meissner's corpuscle; small oval encapsulated receptor located just below the epidermis; especially the fingertips, soles of feet, and lips.

Meissner's corpuscle; small oval encapsulated receptor located just below the epidermis; especially the fingertips, soles of feet, and lips.

Meissner's corpuscle; small oval encapsulated receptor located just below the epidermis; especially the fingertips, soles of feet, and lips.

Skin from the sole of the foot, with thickened stratum corneum; black bodies are Meissner's corpuscles.

Scalp with many vertical hair follicles.

Scalp with many vertical hair follicles.

Scalp with many vertical hair follicles.

Light micrograph of a longitudinal section of large sebaceous gland at the point of entry of the hair follicle.

Light micrograph of a longitudinal section of large sebaceous gland at the point of entry of the hair follicle.

Light micrograph of a transverse section of hair follicles and their sebaceous glands.

Light micrograph of a transverse section of a sebaceous gland, showing secretory cells.

Light micrograph of merocrine sweat glands showing single tube; these glands secrete a watery fluid, the evaporation of which is important for thermor...

Light micrograph of aporcine sweat glands. These glands secrete a sticky, milky fluid into hair follicles, especially in armpits and genital regions.

Human fingertip, showing nail and epidermis (red), dermis with sebaceous glands, bone, etc.

Polarized light micrograph of a human nail clipping.

Thick skin from the fingertip; epidermis (red), dermis (blue), hypodermis (pale blue); the latter two layers contain sweat glands, and pressure recept...

Thick skin from the fingertip; epidermis, dermis, hypodermis; the latter two layers contain sweat glands, and pressure receptors. Haemotoxylin and Van...

Thick skin from the fingertip; epidermis, dermis, hypodermis; the latter two layers contain sweat glands, and pressure receptors.

Thick skin from the fingertip; epidermis, dermis, hypodermis; the latter two layers contain sweat glands, and pressure receptors.

Micrograph of the epidermis of a fingertip's thick skin, showing the stratum germinativum, stratum spinosum (prickle cell layer), stratum granulosum,...

Epidermis of thick skin from the palm of the hand.

Epidermis of the skin; cellular layers.

Micrograph of the stratum spinosum, also known as the prickle-cell layer, of the epidermis. This layer is found between the stratum granulosum and str...

The basal epithelial cells are packed with melanin (brown pigment). There are only traces of melanin in caucasian skin.