mortality/aging
• about 80% die within 2 days after birth, however the remaining 20% survive to adulthood
|
immune system
• poorly developed thymus with no distinction of cortex and medulla
|
small thymus
(
J:39865
)
• total cell number of thymus is reduced from 1/100 to 1/500 of the heterozygous littermate
|
• the early stage intrathymic c-kit+ T precursor cells are largely depleted
• development from double negative (DN) to double positive (DP) cells appears to be partially inhibited
|
• in peripheral lymph node tissue the CD4-CD8+ single positive cells are significantly reduced relative to CD4+CD8- single positive cells
• the relative proportion of CD4+CD8+ cells is reduced from 88% in controls to 57% in homozygous thymocytes while that of single positive cells was increased from 11 to 38%
|
• the number of lymphocytes recovered from a pair of inguinal lymph nodes is reduced to about 1/10 of that from heterozygous littermates
|
• reduction of peripheral T cells in the spleen and lymph node
|
• number of thymocytes at E18.5 is reduced 10-fold
|
• the relative proportion of CD4+CD8+ cells is reduced from 88% in controls to 57% in homozygous thymocytes
|
• in peripheral lymph node tissue the CD4-CD8+ single positive cells are significantly reduced relative to CD4+CD8- single positive cells
|
• the number of splenocytes is slightly lower in homozygotes
|
• lymph node shows reduced cellularity of the deep cortex where the T cells reside
|
hematopoietic system
• poorly developed thymus with no distinction of cortex and medulla
|
small thymus
(
J:39865
)
• total cell number of thymus is reduced from 1/100 to 1/500 of the heterozygous littermate
|
• the early stage intrathymic c-kit+ T precursor cells are largely depleted
• development from double negative (DN) to double positive (DP) cells appears to be partially inhibited
|
• in peripheral lymph node tissue the CD4-CD8+ single positive cells are significantly reduced relative to CD4+CD8- single positive cells
• the relative proportion of CD4+CD8+ cells is reduced from 88% in controls to 57% in homozygous thymocytes while that of single positive cells was increased from 11 to 38%
|
• the number of lymphocytes recovered from a pair of inguinal lymph nodes is reduced to about 1/10 of that from heterozygous littermates
|
• reduction of peripheral T cells in the spleen and lymph node
|
• number of thymocytes at E18.5 is reduced 10-fold
|
• the relative proportion of CD4+CD8+ cells is reduced from 88% in controls to 57% in homozygous thymocytes
|
• in peripheral lymph node tissue the CD4-CD8+ single positive cells are significantly reduced relative to CD4+CD8- single positive cells
|
• the number of splenocytes is slightly lower in homozygotes
|
endocrine/exocrine glands
• poorly developed thymus with no distinction of cortex and medulla
|
small thymus
(
J:39865
)
• total cell number of thymus is reduced from 1/100 to 1/500 of the heterozygous littermate
|
• number of thymocytes at E18.5 is reduced 10-fold
|