Alpha-lactalbumin is a calcium-binding protein that may have a role in calcium transport. Alpha-lactalbumin is rich in the amino acid cysteine, which is a building block of glutathione, a powerful antioxidant in the body that plays an important role in immunity. Instantized Alpha-lactalbumin.
If Windows 8.1 came preinstalled on your computer, your Windows 8.1 product key should be on a sticker on your computer or with your documentation. The Windows 8.1 product key is a series of 25 letters and numbers and should look like this: xxxxx-xxxxx-xxxxx-xxxxx-xxxxx.
Step 2: Download Windows 8.1 from the Windows Store. Note. If you installed Windows 8.1 Preview by booting from ISO media, you can update to the final version of Windows 8.1 Pro using the Windows Store, but your system won't activate until you buy a Windows 8.1 license and product key.tep 2: Download Windows 8.1 from the Windows Store. Note. If you installed Windows 8.1 Preview by booting from ISO media, you can update to the final version of Windows 8.1 Pro using the Windows Store, but your system won't activate until you buy a Windows 8.1 license and product key.