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  Indian J Med Microbiol
 

Figure 1: Progressive miniaturization within follicular units. (a and b) Arrector pili muscle (APM) loses attachment to secondary follicles in herald units but remains attached to the primary follicles. (c and d) Miniaturization of secondary follicles and detachment of the APM from these follicles is then extended to the remaining follicular units. (e) Primary follicles in herald units are affected by miniaturization, and eventually muscle attachment is totally lost. (f and g) Baldness occurs when the entire follicular unit is miniaturized. The same pattern of miniaturization and muscle loss continues until all follicular units are affected

Figure 1: Progressive miniaturization within follicular units. (a and b) Arrector pili muscle (APM) loses attachment to secondary follicles in herald units but remains attached to the primary follicles. (c and d) Miniaturization of secondary follicles and detachment of the APM from these follicles is then extended to the remaining follicular units. (e) Primary follicles in herald units are affected by miniaturization, and eventually muscle attachment is totally lost. (f and g) Baldness occurs when the entire follicular unit is miniaturized. The same pattern of miniaturization and muscle loss continues until all follicular units are affected