In a finding that will require textbooks to be rewritten, researchers discovered a direct link between the brain and the immune system, via lymphatic vessels that were not previously known to exist. The new finding could open new avenues for understanding autism, multiple sclerosis, Alzheimer's, and many other diseases.
Skin anatomy; drawing shows layers of the epidermis, dermis, and subcutaneous tissue including hair shafts and follicles, oil glands, lymph vessels, nerves, fatty tissue, veins, arteries, and a sweat gland.
Clark levels of skin cancer; drawing shows skin with five thin lesions of different depths. In the first lesion (Clark Level I), the cancer is in the epidermis only. In the second lesion (Clark Level II), the cancer has begun to spread into the papillary dermis (upper layer of the dermis). In the third lesion (Clark Level III), the cancer has spread through the papillary dermis into the papillary-reticular dermal interface but not into the reticular dermis (lower layer of the dermis). In…
Dermoscopy_tutorial- An educational web site on dermoscopy where physicians dealing with skin tumors may learn how to improve early diagnosis of melanoma using dermoscopy. The use of dermoscopy has uncovered a new and fascinating morphological dimension of pigmented skin lesions thus increasing the effectiveness of clinical diagnostic tools to differentiate melanoma from other pigmented skin lesions.
Respiratory anatomy; drawing shows right lung with upper, middle, and lower lobes; left lung with upper and lower lobes; and the trachea, bronchi, lymph nodes, and diaphragm. Inset shows bronchioles, alveoli, artery, and vein.