1970s Topps on the back was in a different typeface. The Burger King set featured 22 cards plus a checklist card. Several cards reflected players changing teams, most notably Pete Rose (Phillies) and Tommy John (Yankees). During the 1970s Topps issued cards featuring the two professional basketball leagues active at the time, the American Basketball Association (ABA) and the National Basketball Association (NBA) until they merged in 1976. Base set 264 cards (NBA/ABA) Size: 2.5 × 3.5 inches Base set 264 cards (NBA/ABA) Size: 2.5 × 3.5 inches Base set 144 cards (NBA) Size: 3⅛ × 5¼ inches. Base set 132 cards
Molecular-weight size marker a fluorophore). This derivitization with a fluorophore permits both separation on a gel under the desired circumstances and fluorescence imaging of the gel. In this case, a polyacrylamide gel is used. As with DNA, RNA, and protein electrophoresis, markers are run alongside the samples of interest in carbohydrate gel electrophoresis. The markers consist of oligosaccharides of known molecular weight. Like the samples of interest, the marker is also derivitized with a fluorophore (usually with 8-aminonapthalene-1,3,6-trisulfonic acid (ANTS) or 2-aminoacridone). Molecular-weight size marker A molecular-weight size marker, also referred to as a protein ladder, DNA ladder, or RNA ladder, is a