Drosophila egg chamber development requires cellular and molecular mechanisms controlling morphogenesis. Previous research has shown that the mechanical properties of the basement membrane contribute to tissue elongation of the egg chamber. Here, we discuss how indentation with the microindenter of an atomic force microscope can be used to determine an effective stiffness value of a Drosophila egg chamber. We provide information on the preparation of egg chambers prior to the measurement, dish coating, the actual atomic force microscope measurement process, and data analysis. Furthermore, we discuss how to interpret acquired data and which mechanical components are expected to influence measured stiffness values.
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