A viscous liquid, a protein, passes through minute tubes in the spider’s body, and the liquid is changed to a solid thread by a rearrangement of its protein molecules, explains Encyclopædia Britannica.
यह प्रोटीन पदार्थ अपने अणुओं की संरचना बदलकर एक मज़बूत रेशम बन जाता है ।