Freckle regular use of sunblock can inhibit their development. Liver spots (also known as sun spots and lentigines) look like large freckles, but they form after years of exposure to the sun. Liver spots are more common in older people. Freckle Freckles are clusters of concentrated melaninized cells which are most easily visible on people with a fair complexion. Freckles do not have an increased number of the melanin-producing cells, or melanocytes, but instead have melanocytes that overproduce melanin granules (melanosomes) changing the coloration of the outer skin cells (keratinocytes). As such, freckles are different from lentigines and moles, which are
Bolt-on neck serial numbers, or include decorative artwork. Some makers of electric guitars with bolt-on necks (Fender in particular) write a production date on the heel of the component neck, where it is hidden when the neck is attached to the body. The neck can then be removed to check the date, which is often cross-referenced with the serial number to accurately date and identify the guitar. The term "bolt-on" is usually a misnomer, introduced mostly by Fender whose electric guitars and basses have largely had component necks held to the instrument's body with wood screws. Actual bolted joints (i.e., a bolt