[131] [132] Species from the following genera and the following individual species are known to synthesize B 12 : Propionibacterium shermanii , Pseudomonas denitrificans , Streptomyces griseus , Acetobacterium , Aerobacter , Agrobacterium , Alcaligenes , Azotobacter , Bacillus , Clostridium , Corynebacterium , Flavobacterium , Lactobacillus , Micromonospora , Mycobacterium , Nocardia , Proteus , Rhizobium , Salmonella , Serratia , Streptococcus and Xanthomonas
Treated mice displayed myofibers nearly twice as large in cross-sectional area and demonstrated higher contractile strength, with reports of up to 70% greater force compared to untreated groups
However, applying the same number of drops provides enough consistency to support skin and hair appearance
Results are typically visible within a few weeks of starting, with more significant progress occurring over several months as the treatment continues