Electron transfer is usually difficult to see in the organic. reactant(s) and product(s) in an organic redox reaction. For example the conversion of a 2Â°. alcohol to a ketone (Figure 17.003) is oxidation, but it is not obvious that electron transfer has. occurred by looking at the alcohol and ketone structures. Figure 17.003. This electron transfer is generally visible, however, in the inorganic reagents and products of.
Other lesions, such as basal cell carcinoma, squamous cell carcinoma, melanoma, and Kaposiâs sarcoma are malignant, and early diagnosis and treatment can prevent metastasis, which. can be life threatening. Benign and pre-cancerous lesions.
Squamous cell carcinoma in situ, also called Bowen disease, is the earliest form of squamous cell skin cancer. âIn situâ means that the cells of these cancers are still only in the epidermis (the upper layer of the skin) and have not invaded into deeper layers. Bowen disease appears as reddish patches.