So this inside portion, the cavity is the lumen of our distal convolute tubule. Everything outside the distal convolute tubule is our surrounding tissue, also known as the interstituel. And these are the cells that are found that line the distal convolute tubule. So we have two types of cells that we should be familiar with that are found inside the distal convolute tubule. So let's begin with these cells shown in purple. So if we examine this diagram here, we see that our distal convolute tubule, this section of our distal convolute tubule is actually found in close proximity to our glomerulus.