Blood group B individuals have the B antigen on the surface of their RBCs, and blood serum containing IgM antibodies against the A antigen. Therefore, a group B individual can receive blood only from individuals of groups B or O (with B being preferable), and can donate blood to individuals with type B or AB.
Language development usually signals the development of memory and the understanding required to get time out. . Dr. Sears recommends starting time out at 18 months and expects that toddlers will understand it by 2. . For toddlers many developmental experts recommend natural consequences rather than or along with timeouts.
Red flag: If your child isn't toddling by 14 or 15 months, bring it up with her doctor. This is still within the normal range of development, but now's a good time to check for anything that may be delaying the milestone. 16 to 18 months. With help, your toddler can walk up and down stairs.