A sense amplifier construction comprises a first n-type transistor and a second n-type transistor above the first n-type transistor. A third p-type transistor is included and a fourth p-type transistor is above the third p-type transistor. A lower voltage activation line is electrically coupled to n-type source/drain regions that are elevationally between respective gates of the first and second n-type transistors. A higher voltage activation line is electrically coupled to p-type source/drain regions that are elevationally between respective gates of the third and fourth p-type transistors.