Songbirds are distinguished from other perching birds by certain anatomical characteristics, especially the more complicated vocal organ, or syrinx.
These engineered tissues can subsequently be used as building units for the fabrication of a larger and more complicated engineered-organ, as shown in Figure 1.
While this makes the transplant procedure more complicated, marked organ improvement, particularly of the lung, the kidney and the central nervous system, has occurred following HSCT.
There are some disadvantages of using tetra- or octameric RGD peptides over their dimeric counterparts, such as the more complicated synthesis and higher uptake in non-target organs.
However, many such factors appear to be involved in multiple pathways to affect cell number or size [ 8], suggesting that the mechanisms of organ-size control in plants are more complicated than those in animals [ 1, 9].
Metabolic differences between species, organs and tissues make elucidation of DA metabolism more complicated; the multitude of different models used make it hard to combine the different findings [ 88, 131, 132, 138].
The substantial excess risk for numerous malignancies without any established or suspected infectious aetiology further suggests that the mechanisms by which organ transplantation increases cancer risk may be more complicated than an infectious-driven malignant transformation.
It is foreseen that generation of such complex, stem-cell-based, multi-organ in vitro system would allow us to model much more complicated physiological processes, such as human nutriology (Ben-Zvi and Melton, 2015).
To redirect microvascular flow, matters become more complicated if one realizes that sepsis causes heterogeneous effects in constriction and dilation in different organs and at different levels of the microcirculation [ 22].
More complicated, complex, difficult.
