Ziyong Lin

Dec 28, 2023 | pnas.org | Ying Li |Fritz Breithaupt |Thomas Hills |Ziyong Lin

Primate social organization evolved from a flexible pair-living ancestorEdited by Anthony Di Fiore, The University of Texas at Austin, Austin, TX; received September 9, 2022; accepted October 26, 2023SignificanceWas the ancestor of all primates a solitary-living species? Did more social forms of primate societies evolve from this basic and simple society? Until now, the dogmatic answer was yes.

Dec 27, 2023 | pnas.org | Ying Li |Fritz Breithaupt |Thomas Hills |Ziyong Lin

We tend to think of epidemics as beginning slowly, accelerating to a peak, and then falling off in intensity. This pattern is commonly observed for a wide range of diseases both human and animal and has even motivated an empirical formulation, known as Farr’s law, for the shape of epidemic trajectories (1, 2). Loosely speaking, the law states that what goes up must come down—and will do so somewhat symmetrically.

Dec 26, 2023 | pnas.org | Ying Li |Fritz Breithaupt |Thomas Hills |Ziyong Lin

A model for collagen secretion by intercompartmental continuitiesEdited by Suzanne R. Pfeffer, Stanford University School of Medicine, Stanford, CA; received June 21, 2023; accepted November 14, 2023 by Editorial Board Member Ulrich HartlSignificanceProcollagen cannot be exported from the endoplasmic reticulum (ER) by standard COPII-coated vesicle of 60 nm average diameter.