**3. Developmental plasticity**

The developmental plasticity is the ability of an organism to develop in various ways, depending on the particular environment or setting [24]. This can be based on the interaction of cellular cells, which refers to direct interactions between cell surfaces that play a crucial role in the development and functions of multicellular organisms, such as complex, structural humans. These interactions allow the cells to communicate with one another in response to changes in the microbial environment [25]. This ability to send and receive signals is essential for cell survival. For instance, normal embryonic and postnatal development requires a fine regulation of cell proliferation, differentiation, migration, and apoptosis. During organogenesis, cell–cell interactions trigger events such as epithelial-mesenchymal transition (thin protective layer) and tubulogenesis (kidney development) that describes tissue that forms a thin protective layer on exposed bodily surfaces and forms the lining of internal cavities, ducts, and organs. Another example is related to cystogenesis, tubulogenesis, and kidney development [26]. Cystogenesis and tubulogenesis are important for many complex biological processes such as organ development. Again, if we compare an epidermal keratinocyte and a pancreatic acinar cell, the same genome, yet their profound morphological, physiological, and biochemical differences are entirely

the product of epigenetic modification. Keratinocyte cells are the building blocks of the skin. They are the most common type of skin cell and make keratin, a protein found in the skin, hair, and nails.

One condition that causes the pancreas to stop producing adequate enzymes is pancreatic acinar atrophy. This occurs because the disease hurts slowly and without obvious symptoms. The ability of many animals is adaptability to environmental evolution. This can make small size and slow metabolism to live and survive, while the enlarged size and accelerated metabolism are advantages of reproductive success when resources are available. Often this occurs early in life or even through inheritance from parents and even grandparents. However, fetuses who are adjusting to one environment, such as the uterus, may be at risk when exposed to other environment when they become adults [27]. Effects of prenatal exposure to the Dutch famine on adult disease in later life. Bees determine the number of larvae within the appropriate age group and begin to place these larvae to become queens. The only difference between the honeybees and the queen is the food received during the process of maturity: the workers feed potential queens royal jelly throughout their lives, while the bees are working on royal jelly during the first 2 days of the larvae [28].
