What does the term 'memory' of the Immune system mean ?
What does the term 'memory' of the Immune system mean ?
When body encounters a pathogen for the first time produce a response called Primary response.
Primary response is of low intensity.
- Memory cells are formed due to this primary response.
- These cells are stored in spllen and lymph nodes.
When body encounters the same pathogen subsequently then body elicits secondary response.
Secondary response is of high intensity.
Similar Questions
Match the following columns
Column $-I$
Column $-II$
$(A)$ Physical barriers
$(1)$ Interferon
$(B)$ Physiological barriers
$(2)$ Leukocytes
$(C)$ Cellular barriers
$(3)$ Tears
$(D)$ Cytokinin barriers
$(4)$ skin
$A$ $B$ $C$ $D$
Match the following columns
| Column $-I$ | Column $-II$ |
| $(A)$ Physical barriers | $(1)$ Interferon |
| $(B)$ Physiological barriers | $(2)$ Leukocytes |
| $(C)$ Cellular barriers | $(3)$ Tears |
| $(D)$ Cytokinin barriers | $(4)$ skin |
$A$ $B$ $C$ $D$
$A$ : Colostrum is a very efficient means of transferring immunity to a newborn.
$R$ : IgM from mother’s milk protects the baby from the respiratory infection usually affecting in young age.
$A$ : Colostrum is a very efficient means of transferring immunity to a newborn.
$R$ : IgM from mother’s milk protects the baby from the respiratory infection usually affecting in young age.
Write a note on lymphoid organs.
Write a note on lymphoid organs.
‘Pathogens' are
‘Pathogens' are
What are interferons ? How do interferons check infection of new cells ?
What are interferons ? How do interferons check infection of new cells ?