Facebook eventually filed for an initial public offering on February 1, 2012. Facebook held an initial public offering on May 17, 2012, negotiating a share price of US$38. The company was valued at $104 billion, the largest valuation to date for a newly listed public company.
No one knows what causes these small, painful blisters inside your mouth. Triggers include hypersensitivity, infection, hormones, stress, and not getting enough of some vitamins. Also called aphthous ulcers, canker sores can show up on the tongue, cheek, even your gums.
7 Possible Causes of Mouth and Tongue Ulcers. So what causes tongue ulcers? Besides canker sores, there are a number of different possible triggers that can make a mouth ulcer appear. Oral thrush: This is a condition caused by an overgrowth of the fungus Candida albicans within the mouth.