The primary antibody passed from mother to baby, as indicated by the provided information, is immunoglobin G (IgG).
Key Antibody Transferred
Based on the reference, the specific type of antibody passed from the mother to her infant is immunoglobin G (IgG) antibodies. These maternal antibodies play a crucial role in providing protection to the baby starting from birth and continuing through the initial months of life.
How Maternal Antibodies Are Transferred
Maternal antibodies, specifically IgG, are transferred to the baby through distinct pathways. The reference highlights two main methods:
- Through the Placenta: IgG antibodies are passed directly from the mother's bloodstream across the placenta to the developing fetus during pregnancy. This provides the baby with passive immunity before birth.
- Via Breastfeeding: After birth, maternal antibodies, including IgG, are secreted into the colostrum (the first milk produced) and later into the mature breast milk. These antibodies are then transferred to the infant during breastfeeding.
This process of receiving antibodies from the mother is a form of passive immunity, where the baby receives pre-made antibodies rather than producing them themselves. This helps protect the newborn from various infections while their own immune system is still developing.
Below is a summary based on the transfer methods mentioned in the reference:
| Antibody Type | Transfer Method | Role |
|---|---|---|
| Immunoglobin G (IgG) | Placenta | Protects fetus/newborn before and at birth |
| Immunoglobin G (IgG) | Colostrum and Milk (Breastfeeding) | Protects infant in the first few months |
