Astral MTs represent the microtubules nucleating from the nuclear envelope in larval muscle. The box highlights a zoomed region of the nuclear envelope. Representative KASH and SUN proteins are shown in orange and magenta, respectively. Abbreviations: KASH, Klarsicht, Anc-1, and Syne Homology; INM, inner nuclear membrane; MTs, microtubules; NPC, nuclear pore complex; ONM, outer nuclear membrane; PNS, perinuclear space; SR, sarcoplasmic reticulum; SUN, Sad1 and UNC-84.