Related Clues:

• Red Cross letters
• Compose a text
• Prepare an email
• Prepare a blog post, say
• Transfusion datum
• Sort, kind
• Sans serif, e.g
• Blood-bank category
• Dating preference
• Use an old IBM Selectric
• Like a universal recipient
• Transfusion letters
• A kind face?
• Kind or sort
• Blood-type group