ladderlike

adj

1. Resembling a ladder (device used for climbing).

   “How strange and yet how good it was to thread those narrow passages once more! Their suffocating constriction and padded, ladderlike steps summoned up a thousand memories of gambades and trysts: coursing the white wolves, scourging the prisoners of the antechamber, reencountering Oringa.”

   “The fastest moving components of capsular polysaccharides can usually be separated as distinct bands in a ladderlike pattern by gel electrophoresis...”