Prevalence of vitamin B12 deficient Korean centenarians on the traditional semi-vegetarian was not higher compared with those from Western nations with animal-oriented foods. Screening of vitamin B12 contents has revealed that some traditional soybean-fermented foods, such as Doenjang and Chunggukjang, also Gochujang, Ganjang (soy sauce), cabbage Kimchi, and seaweeds (laver , sea lettuce, sea tangle, sea mustard ) contain considerable amounts of vitamin B12. Soybeans (steamed) and tofu do not contain B12.
Laver, dried, seasoned & toasted - 55 -71 mcg in 100 g dry weight
Sea lettuce, raw - 85 mcg in 100 g dry weight
A virus is a small infectious agent that replicates only inside the living cells of other organisms. Viruses can infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea.
There are millions types of viruses, ~ 5,000 virus species have been described in detail. Viruses are found in almost every ecosystem and are the most abundant type of biological entity. The origins of viruses in the evolutionary history of life are unclear.
While not inside an infected cell or in the process of infecting a cell, viruses exist in the form of independent particles, virions, which consist of the genetic material made from either DNA or RNA, a protein coat, and in some cases an outer coat of lipids. Virion is about one one-hundredth the size of a bacterium.