Bronchoalveolar lavage (BAL) fluid analysis was performed to determine whether the sympathetic nervous system and T cells were key sources of catecholamines in current models of lung injury. Peak levels of adrenaline occurred in BAL fluids 2 h after the initiation of immune-complex-mediated injury (Fig. 4e).
An example to show covariance estimation with the Mahalanobis distances on Gaussian distributed data. For Gaussian distributed data, the distance of an observation to the mode of the distribution can be computed using its Mahalanobis distance: where and are the location and the covariance of the underlying Gaussian distribution. In practice, and are replaced by some estimates.
The distance formula is derived from the Pythagorean theorem. Distance between two points in a plane is calculated with the 2 coordinates (x1, y1) and (x2,y2). Draw a right angled triangle with the line formed by the points. The distance between the two points can be calculated by finding the horizontal (x2 - x1) and vertical distances (y2 - y1). Enter the coordinate values into this online Distance Between Two Points Calculator and find the length between the two points.