It's very complex to operate it.
Thus, TCR-CD3 represents a multichain membrane signaling protein complex that is very challenging to study.
Although a wide variety of metabolic pathways involve enzymes that are tightly bound to each other, others may involve more loosely associated complexes that are very difficult to study outside the cell.
In the future, it is very interesting to study the multi-quasi-synchronization of coupled complex control systems [43, 44].
These communities are very complex systems, often containing 1000s of different species engaged in co-dependent relationships, and are therefore very difficult to study.
Thus, it was very interesting to study the antibacterial and antiviral activity of Petamcin-A as a complex preparation.
In addition to sharing several characteristics with other food foams like beer foam, for instance, the espresso coffee foam may contain solid particles (minute coffee cell-wall fragments), it is subjected to a remarkable temperature gradient and its continuous phase is an oil in water emulsion rendering it a very complex system to be studied.
The thing with ageing, of course, is that it entails different levels – molecular, cellular, hormonal and physiological – different organs and different systems in the body, which makes it very complex and relatively difficult to study.
Karen Lone Hill, who heads the department of Lakota studies at Oglala Lakota College on the Pine Ridge Reservation, said that Ms. Red Shirt's work provides a valuable record, one that may help people "to better understand the Lakota language," which she added is "very complex," but little studied by linguists.
