I. Gauge-Field Theory (1/3 Pages)
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Using "Gauge-Field Theory" helps us to analyze theoretically the basic mechanisms both about a human body and disease. The majority of medical researchers and doctors tend to think that a human body maintains the life by the very-difficult mechanisms such as chemical reactions, genetic function and so on. However, because of this thought, they hardly observe the whole figure of a human body. In order to grasp the whole figure of a human body, medical researchers and doctors make good use of the basic theoretical conceptions: gauges and fields.

1. Gauge: The Smallest Unit
First of all, check how the concept of "Gauge" is useful to grasp theoretically how a human body controls the mechanism. Theoretical physics has the concept of "Gauge." Usually when we try to measure a thing, we begin by deciding the smallest unit and then compare the thing with the unit. For instance, when we measure the length of a stick, we prepare a scale, of which unit of length is centimeter or millimeter. Likewise, when we try to clearly measure a cell and an organ, we need to define the smallest unit in a human body. For this purpose, the concept of "Gauge" is very useful.

• A Gauge and A Cell
First of all, let us make use of a gauge as the smallest unit in a human body: a cell. A cell is the smallest unit in a human body; on the other hand, a gauge can indicate the smallest unit in a thing. Thus, a cell can theoretically be expressed as a gauge. Indeed, using a gauge will enable us to clearly measure a tissue and an organ.

• Two Kinds of Gauges
Specifically, when we measure a tissue and an organ, we can use two types of gauges. One is a square, which is the two-dimensional expression of "Gauge." This gauge indicates the two-dimensional theoretical expression of "Cell." The other is a cube, which is the three-dimensional expression of "Gauge." This gauge indicates the three-dimensional theoretical expression of "Cell." The figures below illustrate these two kinds of gauges.

2. Field: A Unit Consisting of Gauges
Next, also check how we can use the conception of "Field." Theoretical physics explains that a field usually indicates a mass of gauges. This thought is indeed useful for us to express theoretically a tissue and an organ. For instance, an organ is made of cells which have already been defined as gauges; thus, an organ can be defined as a field which consists of gauges. Importantly, besides an organ, a group of organs can also be defined as a field. In short, the conception of field helps us to pay attention not only to the relationship among organs, but also to the relationship between a cell and an organ. The figures below illustrate the relationship between a cell and an organ, as well as that between a gauge and a field.

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