Sickle cell anemia is the result of a point mutation, a change in just one nucleotide in the gene for hemoglobin. This mutation causes the hemoglobin in red blood cells to distort to a sickle shape when deoxygenated. The sickle-shaped blood cells clog in the capillaries, cutting off circulation.
Saving an attachment. Saving attachments from Mail is just as easy. Next time you receive a message to which somebody has attached a file, just tap and hold on that attachment until a Share sheet pops up. In the bottom row of icons, choose Save Attachment.aving an attachment. Saving attachments from Mail is just as easy. Next time you receive a message to which somebody has attached a file, just tap and hold on that attachment until a Share sheet pops up. In the bottom row of icons, choose Save Attachment.
Remove or hide ads in Yahoo Mail. You can temporarily hide the right-side advertisement you see in Yahoo Mail accounts on a computer, or permanently remove all graphical ads by upgrading to Ad Free Yahoo Mail. Text ads and ads in other versions of Yahoo Mail can't be hidden. Sign in to Yahoo Mail. 2  Click the right-facing arrow between your list of emails, or a single email you're viewing, and the advertisement on the right. - 3  The ad is hidden from view.