Question

えむ

この青い線が引いてある部分は分詞構文でしょうか？
分詞構文だとしたらカンマなしの分詞構文は存在するのでしょうか？

36) The team dipped more yarn in an
solution, again with no enzyme. 37) Then, they
exposed the mix to various light sources. 38)
"Very slowly, over the next couple of hours, [the
yarn] will turn blue, and more and more blue,"
Welner says. 39) "The light will develop the
color."
40) Light from the sun, from LEDs and even
from household light bulbs can do this. 41) In
(4)
fact, light can dye denim even darker than the
enzyme method could using the same amount of
indican.
と3
37
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Answer 1

いちご

この青い線が引いてある部分は分詞構文でしょうか？
↓
using ～ indican は、分詞構文です。

分詞構文だとしたらカンマなしの分詞構文は存在するのでしょうか？
↓
存在します。