interleukin-12 (il-12) is a key cytokine involved in regulating the balance between th1 and th2 cells by promoting th1 response. a reduced capacity to produce this cytokine could lead to aberrant th2 development. on the same aspect significant impact of il-12 on invariant natural killer t (inkt) cells was reported. therefore, we examined the serum levels of il-12 and the absolute number of peri...

IX root development, cell divisions at the root tip are predominantly localized in the first few millimeters of the typical dicot seedling root. These divisions give rise to the cells which form the mature root structure. By differential enlargement and maturation processes these cells form the distinctive mature tissue systems of the primary root: the epidermis, cortex, endodermis, pericycle, ...