Doctrine of chata siddhanta (Theory of tissues formation and differentiation)
The basic theory of Ayurveda is based on the state of equilibrium of tridosha, saptadhata and trimala. All these are nourished well initially by the influence of potency of individual jatharagni (digestive energy) after consuming the food then, the productive nutrients (Alara rasa) are passed into each level of Dhatu (bodily tissues) for nourishment. Ultimately necessary nutrients for the formation and development of all tissues are supplied by one stream of pod. They carry their support to the site, where Dhatus are located. The nourishment of all dhatu is influenced by the function of respective dhatvgni (metabolic energy of each tissue) to motivate the formation of self clone of respective tissue and depended tissues (upadhatas) are major function of each Dhatwagni, Dhatvagni of each Dhata also provides the necessary supplements to subsequent tissues to potentiate their owning. Thas Rasa, Rakta, monsa, meda asti, majja and shukra Dhatus develop sequentially and nourish for the Dhatus for example Rasadhatvagni Plays an important role in the formation of rakta Dhatu from Rasa Dhatu by the influence of rakta dhatvgni whenever. Potency of any level of dhatvagni diminishes or elevates the business of production of next Dhatu may be affected. During this process, some metablic wastes are produced which are known as dhatumelg (tissue excreta). A same pheno menon of differentiation and development of dhatu is sustained throughout life for everyone. Avarana (obstruction) or dusti (vitiation) in different srotas (microcirculation of tissue) may lead to deformity of the next tissue I Ayurveda, some teories o tissue format and development (dhatus Pushti ) an elucidated in this regard, these theories an khale, kapota nyaya, ksheera dadni ngaya, kedira kulya naya and ek dhatu Pushti nayay.
In the nourishment process from rasa to shukra dhatu, dhatvagni of respective dhatu substantially divide to essential elements in to three fractias that is sukshma, sthala and mala Bhaga, tissue specific stem cells sustain organs for a lifetime through self-renewal and generation and differentiated progeny eternity of stern cell theory the term stem cell appears in the scifific literature as early as 1868 in the works of the emirent serman biologist Ernst hacked. In 1908 by the Russian histories, Alexandar makshina was postulated the existence of hematopoietic stem cell unspecialized cell masterecey undifferentiated and un specialized cells having potency to differentiate in to specialized cell type stem cells are defined by two fundamental properties. They self-renew and every time they give rise to acess with and identical stem cell program on the basis of potency stem cells are classified into totipotent, pluripotent, multipotent oligopotent and unipotent type.